insylem

Hey, If anyone knows who, or where I can go to get this data interpeted please let me know. Im getting Code P0172 and the follow was the freeze frame data from one of the times the code poped up. I've had it with the service department here in Enterprise, they keep giving me lame excuses instead of results. Since them i have found and correct a few vacume leaks. But I still get the code comming up.
-Jonathan

Fault Code: P0172 "System Too Rich Bank1"
Throttle Position: 18.8%
RPM: 878
Engine Load: 37.6%
Airflow: 5.85 CFM
Manifold Absolute Pressure: 50 Kpa
Coolant Temp: 179 F
Intake Temp: 95 F
Ignition Timing BTDC: 7.0 Degrees
Short Term Fuel Trim1: -9.2%
Long Term Fuel Trim1: -20.2%
Short Term Fuel Trim3: 58.5%
Long Term Fuel Trim3: 39.8%
Speed: 0 MPH
Fuel System1: CLSD
O2S1111: 0.755 VDC
O2S1211: 0.755 VDC
O2SXX11: 0.755 VDC
Short Term Fuel Trim (Bx-Sy): 11-9.2%
O2S1112: 0.800 VDC
O2S1212: 0.800 VDC
O2SXX12: 0.800 VDC
Short Term Fuel Trim (Bx-Sy)12: 99.2%

arkkornkid

http://www.obd-codes.com/p0172

Coblasts

Heres some info,

DTC P0172
Circuit Description
The powertrain control module (PCM) controls the air/fuel metering system in order to provide the best possible combination of driveability, fuel economy, and emission control. Fuel delivery is controlled differently during Open Loop and Closed Loop. During Open Loop, the PCM determines fuel delivery based on sensor signals, without heated oxygen sensor (HO2S) input. During Closed Loop, the PCM adds HO2S inputs and level of purge to calculate the short and long term fuel trim adjustments. If the HO2S indicates a lean condition, the fuel trim values will be above 0 percent. If the HO2S indicates a rich condition, the fuel trim values will be below 0 percent. The short term fuel trim values change rapidly in response to the HO2S voltage signals. The long term fuel trim makes coarse adjustments in order to maintain Air/Fuel Ratio of 14.7:1. The fuel trim diagnostic will conduct a test to determine if a rich failure actually exists or if excessive vapor from the evaporative emission (EVAP) canister is causing a rich condition. A block of cells contain information arranged in combinations of engine RPM and engine load for a full range of vehicle operating conditions. The long term fuel trim diagnostic is based on an average of cells currently being used. The PCM selects the cells based on the engine speed and load. If the PCM detects an excessively rich condition, DTC P0172 sets.

Check for vacuum leaks first ,your O2 sensor voltage seems to be in range.

Another thing is your injectors could be leaking or not closing down as far as commanded by thee pcm.

2006superchargedss

what was the fix for this old problem?

insylem

Tuning

I baught the car used, and it had some mods:
42# Injectors
K&N Intake
2.85" Pully
INTENSE PCM

and the dealership flashed the PCM to stock when they got it.

So I got it Dynoed, sent the results with the PCM to INTENSE,
they retuned it, got it back and it was leaned out, ran better
smoother, and picked up 10 hp.