So I bought an 09 Turbo ss about a week ago, and my first week with car has been awsome. But now its acting up. And unfortunatly the dealer I bought car from is 5 hours away. When turbo starts to boost, once and a while car falls flat on its face and goes into limp mode. I have to shut off car and restart it in order to drive it. And usually everything seems fine. Car has custom exhaust (what I dont know) k&n CAI, bigger FMIC, and Injen charge pipe. I dont know what kind of downpipe car has. When car goes into.limp mode it throws codes P013E, P2100, and P2101. I believe the car is tuned as Im seeing boost upto 24psi.. I believe the car came from PA, But I bought it in NJ. It has a 90 warranty, but dont know what would actually be covered ( Except by lemon Law) as far as the mods that have been done. Wonder if a local dealer would cover that 90 day, or only the dealer I nought it from? (Im assuming) Anyone have any ideas where I should start or whats wrong?

 

 

DTC P0638, P1551, P2100, P2101, or P2119

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection\Initial Inspection and Diagnostic Overview\Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
Review Strategy Based Diagnosis (See: Testing and Inspection\Initial Inspection and Diagnostic Overview\Strategy Based Diagnosis) for an overview of the diagnostic approach.
Diagnostic Procedure Instructions (See: Testing and Inspection\Initial Inspection and Diagnostic Overview\Diagnostic Procedure Instructions) provides an overview of each diagnostic category.

DTC Descriptors
DTC P0638

Throttle Actuator Control (TAC) Command Performance

DTC P1551

Throttle Valve Rest Position Not Reached During Learn

DTC P2100

Throttle Actuator Control (TAC) Motor Control Circuit

DTC P2101

Throttle Actuator Position Performance

DTC P2119

Throttle Closed Position Performance

Diagnostic Fault Information



Circuit/System Description

The Engine Control Module (ECM) controls the throttle valve by applying a varying voltage to the control circuits of the throttle actuator control (TAC) motor. The ECM monitors the duty cycle that is required to actuate the throttle valve. The ECM monitors the throttle position sensors 1 and 2 to determine the actual throttle valve position.

Conditions for Running the DTCs

P0638 and P2101

The engine is operating.
The ignition voltage is greater than 7 V.
DTCs P0638 and P2101 run continuously once the above conditions are met for greater than 5 s.

P1551

DTC P0111, P0112, P0113, P0116, P0117, P0118, P0119, P0700, P2122, P2123, P2127, P2128, or P2138 is not set.
The ignition is ON.
The vehicle speed is 0 km/h (0 mph).
The engine speed is 0 RPM.
The engine coolant temperature (ECT) is greater than 5-100°C (41-212°F).
The intake air temperature (IAT) is greater than 5-144°C (41-291°F).
The ignition voltage is greater than 10 V.
The accelerator pedal position (APP) is less than 15 percent.
DTC P1551 runs once per ignition cycle when the above conditions are met for less than 1 second.

P2100

The ECM is active.
DTC P2100 runs continuously once the above conditions are met.

P2119

DTC P0111, P0112, P0113, P0116, P0117, P0118, P0119, P0700, P2122, P2123, P2127, P2128, or P2138 is not set.
The ignition is ON.
The vehicle speed is 0 km/h (0 mph).
The engine speed is 0 RPM.
The engine coolant temperature (ECT) is greater than 5-100°C (41-212°F).
The intake air temperature (IAT) is greater than 5-144°C (41-291°F).
The ignition voltage is greater than 10 V.
The accelerator pedal position (APP) is less than 15 percent.
DTC P2119 runs once per ignition cycle when the above conditions are met for less than 1 second.

Conditions for Setting the DTC

P0638

The ECM detects that the commanded duty cycle for the range test high is greater than 80 percent. OR
The ECM detects that the commanded duty cycle for the range test low is greater than 80 percent.
Either condition exists for greater than 5 second.

P1551

The ECM detects the TP sensor angle is less than 13 percent or greater than 43 percent when the throttle actuator control motor is deactivated.

P2100

The ECM detects the output circuit for the TAC motor is open, shorted to ground, or shorted to a voltage. The condition exists for greater than 1 second.

P2101

The ECM detects a 4-50 percent difference between the commanded and the actual throttle plate position, dependant upon the rate of commanded throttle movement. The condition exists for 1 second.

P2119

The ECM determines that the throttle valve did not return to the rest position within 1 second. The condition exists for greater than 1 second.

Action Taken When the DTC Sets

DTCs P0638, is a type B DTC.
DTCs P1551, P2100, P2101, and P2119 are type A DTCs.

Conditions for Clearing the DTC

DTCs P0638, is a type B DTC.
DTCs P1551, P2100, P2101, and P2119 are type A DTCs.

Diagnostic Aids

Inspect for a condition in which the throttle valve may have been held open. For example, ice may have formed in the throttle bore causing the throttle valve not to close.

Reference Information
Schematic Reference

Engine Controls Schematics (See: Diagrams\Electrical\Powertrain Management\System Diagram)
Connector End View Reference

Component Connector End Views (See: Diagrams\Connector Views)
Description and Operation

Throttle Actuator Control (TAC) System Description (See: Powertrain Management\Computers and Control Systems\Description and Operation\Throttle Actuator Control (TAC) System Description)
Electrical Information Reference

Circuit Testing (See: Testing and Inspection\Component Tests and General Diagnostics\General Electrical Diagnostic Procedures\Circuit Testing\Circuit Testing)
Connector Repairs (See: Testing and Inspection\Component Tests and General Diagnostics\General Electrical Diagnostic Procedures\Connector Repairs\Connector Repairs)
Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection\Component Tests and General Diagnostics\General Electrical Diagnostic Procedures\Circuit Testing\Testing for Intermittent Conditions and Poor Connections)
Wiring Repairs (See: Testing and Inspection\Component Tests and General Diagnostics\General Electrical Diagnostic Procedures\Wiring Repairs\Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions\Powertrain Diagnostic Trouble Code (DTC) Type Definitions)
Scan Tool Reference

Control Module References (See: Testing and Inspection\Programming and Relearning) for scan tool information
Special Tools

EL 34730-405 - Injector Test Lamp
For equivalent regional tools, refer to Special Tools (See: Powertrain Management\Computers and Control Systems\Tools and Equipment).

Circuit/System Verification

Ignition ON, observe the DTC information with a scan tool. Verify DTC P0121, P0122, P0123, P0221, P0222, or P0223 is not set.

¤ If a DTC is set refer to DTC P0121-P0123 or P0221-P0223 (See: P0121) for further diagnosis.

Observe the scan tool Throttle Position Sensor voltage parameters. Verify that Throttle Position Sensor 1 voltage is between 3.24-3.54 V, and Throttle Position Sensor 2 voltage is between 1.36-1.86 V.

¤ If either Throttle Position Sensor voltage is not within the specified range refer to DTC P0121-P0123 or P0221-P0223 (See: P0121) for further diagnosis.

Rapidly depress the accelerator pedal from the rest position to the wide open throttle position (WOT) and release the pedal. Repeat the procedure several times. DTC P0638, P1551, P2100, P2101, or P2119 should not set.

¤ If a DTC P0121, P0122, P0123, P0221, P0222, or P0223 set while performing this procedure refer to DTC P0121-P0123 or P0221-P0223 (See: P0121) for further diagnosis.

Slowly depress the accelerator pedal to WOT and then slowly return the pedal to closed throttle. Repeat the procedure several times. DTC P0638, P1551, P2100, P2101, or P2119 should not set.

¤ If a DTC P0121, P0122, P0123, P0221, P0222, or P0223 set while performing this procedure, refer to DTC P0121-P0123 or P0221-P0223 (See: P0121) for further diagnosis.

Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

Inspect the throttle body for the following conditions:

A throttle blade that is not in the rest position
A throttle valve that is binding open or closed
A throttle valve that opens or closes without spring pressure

¤ If a condition is found, replace the throttle body.

Note: Disconnecting the throttle body harness connector causes additional DTCs to set.

Ignition OFF, disconnect the harness connector of the throttle body.
Ignition ON, test for 4.0-4.2 V between the TAC motor control 1 circuit terminal B and ground.

¤ If voltage is greater than the specified range, test each of the motor control circuits for a short to voltage. If the circuits tests normal, replace the Engine Control Module.
¤ If voltage is less than the specified range, test the motor control 1 circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the Engine Control Module.

Connect a test lamp between the TAC motor control 2 circuit terminal A and B+. The test lamp should NOT illuminate.

¤ If the test lamp illuminates, test the control circuit for a short to ground. If the circuit tests normal, replace the Engine Control Module.

Test for greater than 3.5 V between TAC motor control 1 circuit terminal B and TAC motor control 2 circuit terminal A.

¤ If the voltage is less than the specified value, test the motor control 2 circuit for an open/high resistance. If the circuit tests normal, replace the Engine Control Module.

Ignition OFF, connect the EL 34730-405 - Injector Test Lamp between the TAC motor control 1 circuit terminal B and TAC motor control 2 circuit terminal A of the throttle body harness connector. Observe the injector test lamp while turning the ignition ON for 5 s and then OFF. Verify the injector test lamp illuminates brightly and then turns OFF.

¤ If the injector test lamp does not illuminate, replace the Engine Control Module.

If all circuits test normal, replace the throttle body.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

Throttle Body Assembly Replacement (See: Powertrain Management\Fuel Delivery and Air Induction\Throttle Body\Service and Repair\Removal and Replacement)
Control Module References (See: Testing and Inspection\Programming and Relearning) for Engine Control Module replacement, setup, and programming

 

DTC P0137, P0138, P013A, P013E, P0140, P2232, P2270, or P2271

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection\Initial Inspection and Diagnostic Overview\Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
Review Strategy Based Diagnosis (See: Testing and Inspection\Initial Inspection and Diagnostic Overview\Strategy Based Diagnosis) for an overview of the diagnostic approach.
Diagnostic Procedure Instructions (See: Testing and Inspection\Initial Inspection and Diagnostic Overview\Diagnostic Procedure Instructions) provides an overview of each diagnostic category.

DTC Descriptors
DTC P0137

HO2S Circuit Low Voltage Sensor 2

DTC P0138

HO2S Circuit High Voltage Sensor 2

DTC P013A

HO2S Slow Response Rich to Lean Sensor 2

DTC P013E

HO2S Delayed Response Rich to Lean Sensor 2

DTC P0140

HO2S Circuit Insufficient Activity Sensor 2

DTC P2232

HO2S Signal Circuit Shorted to Heater Circuit Sensor 2

DTC P2270

HO2S Signal Stuck Lean Sensor 2

DTC P2271

HO2S Signal Stuck Rich Sensor 2

Diagnostic Fault Information



Circuit/System Description

Heated oxygen sensors (HO2S) are used for fuel control and post catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content in the exhaust stream. The HO2S must reach operating temperature to provide an accurate voltage signal. Heating elements inside the HO2S minimize the time required for the sensors to reach operating temperature. The engine control module (ECM) supplies the HO2S with a reference, or bias, voltage of about 450 mV. When the engine is first started, the ECM operates in Open Loop, ignoring the HO2S voltage signal. Once the HO2S reaches operating temperature and Closed Loop is achieved, the HO2S generates a voltage within a range of 0-1,000 mV that fluctuates above and below bias voltage. High HO2S voltage indicates a rich exhaust stream. Low HO2S voltage indicates a lean exhaust stream.

Conditions for Running the DTC

P0137

DTCs P0036, P0037, P0038, P0116, P0117, P0118, P0119, P0128, P2232 are not set.
The engine is running.
The Ignition 1 Signal parameter is between 10-18 volts.
The modeled exhaust gas temp model is more than 700°C (1,292°F) for at least 90 seconds.
The modeled exhaust gas temp model is less than 800°C (1,472°F).
The time after engine start is less than 5.1 seconds.
The engine coolant is more than 60°C (140°F) after last engine shut-down.
The engine coolant at start is less than 40°C (104°F).
DTC P0137 runs once per drive cycle when the above conditions are met.

P0138

The engine is running.
The Ignition 1 Signal parameter is between 11-18 volts.
The modeled exhaust gas temp model is less than 800°C (1,472°F).
DTC P0138 runs continuously when the above conditions are met.

P013A and P013E

The system voltage is between 11-18 volts.
Prior to deceleration fuel cutoff (DFCO), the HO2S 2 voltage was more than 55 mV.
During this drive cycle, the HO2S 2 voltage was 0.48-1.15 volts for more than 0.6 seconds.
The rear O2 sensor is active and has transitioned once from rich to lean.
The modeled exhaust gas temperature is greater than 500°C (932°F).
The primary air/fuel sensor is ready. THEN
The decel fuel cut-off (DFCO) is active.
The primary air/fuel sensor indicates lambda is greater than 3.
This DTC runs each time the above conditions are met.

P0140

The engine is running.
The HO2S 2 heater is stable, and the estimated exhaust temperature was more than 250°C (482°F) for more than 90 seconds.
The ignition voltage is more than 10.5 volts.
The estimated exhaust temperature is less than 800°C (1,472°F).
DTC P0140 runs continuously when the above conditions are met.

P2232

The engine is running.
The HO2S 2 heater is stable, and the estimated exhaust temperature was more than 250°C (482°F) for more than 90 seconds.
The ignition voltage is more than 10.5 volts.
The estimated exhaust temperature is less than 800°C (1,472°F).
DTC P2232 runs continuously when the above conditions are met.

P2270

The engine is running.
The ignition voltage is more than 10.5 volts.
The HO2S 2 has been in Closed Loop for more than 10 seconds.
DFCO is inactive.
The engine air flow has been between 5.56-33.33 g/sec for more than 3 seconds, and is currently more than 9.72 g/sec.
DTC P2270 runs continuously when the above conditions are met for 10 minutes.

P2271

DTCs P0036, P0037, P0038, P0137, P0138, P0140, P0141, P0443, P0458, P0459, P2232 are not set.
The engine is running.
The ignition voltage is more than 10.5 volts.
The HO2S 2 has been in Closed Loop for more than 10 seconds.
DFCO is inactive.
The engine air flow has been between 5.56-33.33 g/sec for more than 3 seconds, and is currently more than 9.72 g/sec.
DTC P2271 runs continuously when the above conditions are met.

Conditions for Setting the DTC

P0137

The ECM detects that the HO2S 2 voltage parameter is less than 60 mV.
DTC P0137 sets within 5 seconds when the above condition is met.

P0138

The ECM detects that the HO2S 2 voltage parameter is more than 1,150 mV.
DTC P0138 sets within 5 seconds when the above condition is met.

P013A

The ECM detects that the time for the sensor voltage to transition from 0.4 to 0.2 volt exceeds 0.4 second.

P013E

The ECM detects that more than 4 seconds are required from the beginning of DFCO for the sensor voltage to fall below 0.15 volt. OR
The ECM detects that more than 8 grams of integrated air mass have passed through the system since the beginning of DFCO and the sensor voltage remains above 0.15 volt.

P0140

The ECM detects that the HO2S 2 voltage parameter is between 0.401-0.519 volt, or that the HO2S 2 internal resistance is more than 40,000 ohms while the calculated exhaust temperature is more than 500°C (932°F).
DTC P0140 sets within 60 seconds when the above condition is met.

P2232

The ECM detects that the HO2S 2 voltage and the HO2S 2 heater voltage changes are synchronous.
DTC P2232 sets within 10 seconds when the above condition is met.

P2270

The ECM detects that the HO2S 2 voltage oscillations are slower than a calibrated value.
DTC P2270 sets within 600 seconds when the above condition is met, or within 1,200 seconds when the fuel level is low.

P2271

The ECM detects that the HO2S 2 voltage oscillations are faster than a calibrated value.
DTC P2271 sets within 600 seconds when the above condition is met, or within 1,200 seconds when the fuel level is low.

Action Taken When the DTC Sets

DTCs P0137, P0138, P013A, P013E, P0140, P2232, P2270, and P2271 are Type B DTCs.

Conditions for Clearing the MIL/DTC

DTCs P0137, P0138, P013A, P013E, P0140, P2232, P2270, and P2271 are Type B DTCs.

Reference Information
Schematic Reference

Engine Controls Schematics (See: Diagrams\Electrical\Powertrain Management\System Diagram)
Connector End View Reference

Component Connector End Views (See: Diagrams\Connector Views)
Electrical Information Reference

Circuit Testing (See: Testing and Inspection\Component Tests and General Diagnostics\General Electrical Diagnostic Procedures\Circuit Testing\Circuit Testing)
Connector Repairs (See: Testing and Inspection\Component Tests and General Diagnostics\General Electrical Diagnostic Procedures\Connector Repairs\Connector Repairs)
Heated Oxygen Sensor Wiring Repairs (See: Testing and Inspection\Component Tests and General Diagnostics\General Electrical Diagnostic Procedures\Wiring Repairs\Heated Oxygen Sensor Wiring Repairs)
Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection\Component Tests and General Diagnostics\General Electrical Diagnostic Procedures\Circuit Testing\Testing for Intermittent Conditions and Poor Connections)
Wiring Repairs (See: Testing and Inspection\Component Tests and General Diagnostics\General Electrical Diagnostic Procedures\Wiring Repairs\Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions\Powertrain Diagnostic Trouble Code (DTC) Type Definitions)
Scan Tool Reference

Control Module References (See: Testing and Inspection\Programming and Relearning) for scan tool information

Circuit/System Verification

Verify that no exhaust leaks are present. Refer to Exhaust Leakage (See: Engine, Cooling and Exhaust\Exhaust System\Testing and Inspection\Exhaust Leakage).
Clear the DTCs with a scan tool.
Operate the vehicle within the conditions for running and setting the DTC. The DTC should not set.
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.

Note: All modules must be powered down or misdiagnosis may result.

Ignition OFF, disconnect the scan tool and wait 60 seconds to ensure all modules are powered down.
Ignition OFF, disconnect the harness connector at the HO2S 2.
Ignition OFF, measure for less than 5 ohms between the HO2S 2 low signal circuit terminal A and ground.

¤ If more than the specified range, test the HO2S 2 low signal circuit for an open/high resistance. If the circuit tests normal, replace the ECM.

Ignition ON, verify the scan tool HO2S 2 parameter is approximately 450 mV.

¤ If more than the specified value, test the HO2S 2 high signal circuit for a short to voltage. If the circuit tests normal, replace the ECM.
¤ If less than the specified value, test the HO2S 2 high signal circuit for a short to ground. If the circuit tests normal, replace the ECM.

Ignition ON, install a 3 A fused jumper wire at the HO2S 2 high signal circuit terminal B. Toggle the other end of the jumper wire between the HO2S 2 low signal circuit terminal A and battery voltage. Verify the scan tool HO2S 2 parameter toggles between 0 mV and approximately 1,000 mV.

¤ If the scan tool HO2S 2 parameter does not toggle correctly, test the HO2S 2 high signal circuit for an open/high resistance. If the circuits test normal, replace the ECM.

If all circuits test normal, replace the HO2S 2.

Repair Instructions

Caution: Refer to Heated Oxygen Sensor Resistance Learn Reset Caution (See: Powertrain Management\Computers and Control Systems\Oxygen Sensor\Service Precautions\Heated Oxygen Sensor Resistance Learn Reset Caution).

Note: For DTC P0131 and P0132, in order to ensure that the performance of the catalyst has not been affected by the fault that set this DTC, operate the vehicle within the Conditions for Running and setting DTC P0420, and verify that DTC P0420 runs and passes. Refer to DTC P0420 (See: P0420).

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

Heated Oxygen Sensor Replacement - Sensor 1 (See: Powertrain Management\Computers and Control Systems\Oxygen Sensor\Service and Repair\Heated Oxygen Sensor Replacement - Sensor 1)
Heated Oxygen Sensor Replacement - Sensor 2 (See: Powertrain Management\Computers and Control Systems\Oxygen Sensor\Service and Repair\Heated Oxygen Sensor Replacement - Sensor 2)
Control Module References (See: Testing and Inspection\Programming and Relearning) for ECM replacement, setup, and programming

 

I see that UTI uniform... Ayeeeee

 

Thanks for all the info. I do most of my own mechanucal work, but some of that is over my head. Im assuming you pulled that info from chevrolets technical bullitens in regards to fixing or figuring out those CEL?

 

Sounds like either the ECM, OR something to do with the throttlebody? Assuming one code is causing the otbers?

 

I'd start by getting it flashed back to stock and go from there. Gm dealer could tell u pretty quick what the issue is I think.