Alright, at work, dont have my book with me but need to find out what these codes are quickly. Maybe a hint as to what the problem is too. Thanks

P0410
P0125
P0174
P0171
P0300
P0101

1996 Z28 A4

 

From what I found on the net.

P0410 - AIR Issue
P0125 - ECT Issue
P0174 - MAF Issue
P0171 - MAF Issue
P0300 - Misfire multiple cylinders
P0101 - MAF Issue

Correct me if Im wrong.

Maybe a bad MAF, bad ECT, and AIR not working. Prob mostly caused by bad MAF and AIR could just get deleted.

 

I searched and came up with this........


P0410- http://www.cz28.com/forums/showthrea...ighlight=P0410
P0125- DTC P0125
Engine Coolant Temperature (ECT) Insufficient for Closed Loop Fuel Control
P0174- DTC P0171 or P0174
Fuel Trim System Lean
P0171- DTC P0171 or P0174
Fuel Trim System Lean
P0300- DTC P0300
Engine Misfire Detected
P0101- DTC P0101
Mass Air Flow (MAF) Sensor Performance

Here is a good thread on codes.... http://www.cz28.com/forums/showthrea...ighlight=P0125 POST 10

 

unplug your maf sensor and try to run the car like that.that should tell you if its bad or not right?

 

http://shbox.com/1/Dtcs.htm

 

Here are all the OBDII on shoebox's site......



OBD-II Codes applicable to 96-97 LT1 equipped F-body cars.
Some codes descriptions will not be the same for other models. © shbox.com
DTC Description
P0100 Mass Air Flow (MAF) insufficient signal activity
P0101 Mass Air Flow (MAF) system performance
P0102 Mass Air Flow (MAF) sensor circuit low frequency
P0103 Mass Air Flow (MAF) sensor circuit high frequency
P0106 Manifold Absolute Pressure (MAP) system performance
P0107 Manifold Absolute Pressure (MAP) sensor circuit low voltage
P0108 Manifold Absolute Pressure (MAP) sensor circuit high voltage
P0112 Intake Air Temperature (IAT) sensor circuit low voltage
P0113 Intake Air Temperature (IAT) sensor circuit high voltage
P0117 Engine Coolant Temperature (ECT) sensor circuit low voltage
P0118 Engine Coolant Temperature (ECT) sensor circuit high voltage
P0121 Throttle Position (TP) sensor circuit insufficient signal activity
P0122 Throttle Position (TP) sensor circuit low voltage
P0123 Throttle Position (TP) sensor circuit high voltage
P0125 Engine Coolant Temperature (ECT) excessive time to closed loop
P0131 Heated Oxygen Sensor (HO2S) circuit low voltage Bank 1 Sensor 1 Bank 1 = LH or driver's side
P0132 Heated Oxygen Sensor (HO2S) circuit high voltage Bank 1 Sensor 1 Bank 2 = RH or passenger's side
P0133 Heated Oxygen Sensor (HO2S) slow response Bank 1 Sensor 1 Sensor 1 = before cat
P0134 Heated Oxygen Sensor (HO2S) insufficient signal activity Bank 1 Sensor 1 Sensor 2 = after cat
P0135 Heated Oxygen Sensor (HO2S) heater circuit Bank 1 Sensor 1
P0137 Heated Oxygen Sensor (HO2S) circuit low voltage Bank 1 Sensor 2
P0138 Heated Oxygen Sensor (HO2S) circuit high voltage Bank 1 Sensor 2
P0140 Heated Oxygen Sensor (HO2S) insufficient signal activity Bank 1 Sensor 2
P0141 Heated Oxygen Sensor (HO2S) heater circuit Bank 1 Sensor 2
P0151 Heated Oxygen Sensor (HO2S) circuit low voltage Bank 2 Sensor 1
P0152 Heated Oxygen Sensor (HO2S) circuit high voltage Bank 2 Sensor 1
P0153 Heated Oxygen Sensor (HO2S) slow response Bank 2 Sensor 1
P0154 Heated Oxygen Sensor (HO2S) insufficient signal activity Bank 2 Sensor 1
P0155 Heated Oxygen Sensor (HO2S) heater circuit Bank 2 Sensor 1
P0157 Heated Oxygen Sensor (HO2S) circuit low voltage Bank 2 Sensor 2
P0158 Heated Oxygen Sensor (HO2S) circuit high voltage Bank 2 Sensor 2
P0160 Heated Oxygen Sensor (HO2S) insufficient signal activity Bank 2 Sensor 2
P0161 Heated Oxygen Sensor (HO2S) heater circuit Bank 2 Sensor 2
P0171 Fuel trim system lean Bank 1
P0172 Fuel trim system rich Bank 1
P0174 Fuel trim system lean Bank 2
P0175 Fuel trim system rich Bank 2
P0200 Injector control circuit
P0300 Engine misfire detected
P0323 Distributor Ignition (DI) low resolution circuit intermittent
P0325 Knock Sensor (KM) module circuit
P0332 Knock Sensor (KS) circuit high/low voltage
P0335 Crankshaft Position (CKP) sensor circuit
P0336 Crankshaft Position (CKP) sensor circuit performance
P0372 Distributor Ignition (DI) high resolution circuit
P0400 Exhaust Gas Recirculation (EGR) system
P0403 Exhaust Gas Recirculation (EGR) solenoid control circuit
P0410 Secondary Air Injection (AIR) system
P0412 Secondary Air Injection (AIR) system control circuit
P0420 Three Way Catalytic Converter (TWC) system low efficiency Bank 1
P0430 Three Way Catalytic Converter (TWC) system low efficiency Bank 2
P0441 Evaporative Emissions (EVAP) system no flow (during purge)
P0443 Evaporative Emissions (EVAP) purge solenoid control circuit
P0500 Vehicle Speed Sensor (VSS) circuit (manual transmission only)
P0506 Idle system low/Idle Air Control (IAC) valve responding
P0507 Idle system high/Idle Air Control (IAC) valve responding
P0530 A/C refrigerant pressure sensor circuit
P0531 A/C refrigerant pressure sensor circuit performance
P0562 System voltage low
P0563 System voltage high
P0601 PCM memory
P0602 PCM not programmed
P1107 Manifold Absolute Pressure (MAP) sensor circuit intermittent low voltage
P1111 Intake Air Temperature (IAT) sensor circuit intermittent high voltage
P1112 Intake Air Temperature (IAT) sensor circuit intermittent low voltage
P1114 Engine Coolant Temperature (ECT) sensor circuit intermittent low voltage
P1115 Engine Coolant Temperature (ECT) sensor circuit intermittent high voltage
P1121 Throttle Position (TP) sensor circuit intermittent high voltage
P1122 Throttle Position (TP) sensor circuit intermittent low voltage
P1133 Heated Oxygen Sensor (HO2S) insufficient switching Bank 1 sensor 1
P1134 Heated Oxygen Sensor (HO2S) transition time ratio Bank 1 sensor 1
P1153 Heated Oxygen Sensor (HO2S) insufficient switching Bank 2 sensor 1
P1154 Heated Oxygen Sensor (HO2S) transition time ratio Bank 2 sensor 1
P1171 Fuel system lean during acceleration
P1222 Injector control circuit intermittent
P1351 Ignition Control (IC) circuit high voltage (open circuit)
P1361 Ignition Control (IC) circuit high voltage (shorted or grounded circuit)
P1371 Distributor Ignition (DI) low resolution circuit
P1380 EB(T)CM DTC detected-rough road data unusable
P1381 Misfire detected-no EB(T)CM/PCM serial data
P1415 Secondary Air Injection (AIR) system Bank 1
P1416 Secondary Air Injection (AIR) system Bank 2
P1441 Evaporative Emissions (EVAP) system flow during non-purge
P1506 Idle Air Control (IAC) system low RPM
P1509 Idle Air Control (IAC) system high RPM
P1532 A/C Evaporator Temperature sensor circuit low voltage
P1533 A/C Evaporator Temperature sensor circuit high voltage
P1539 A/C clutch status circuit high voltage
P1543 A/C system performance
P1545 A/C clutch relay control circuit
P1546 A/C clutch status circuit low voltage
P1572 Traction Control System (ASR/TCS) active circuit low voltage too long
P1626 Theft deterrent system fuel enable circuit
P1641 Fan Control (FC) relay 1 control circuit
P1642 Fan Control (FC) relay 2 and 3 control circuit
P1643 Engine speed (RPM) output circuit
P1652 Vehicle Speed Sensor (VSS) output circuit
P1657 Skip shift/One to four upshift system control circuit
P1661 Malfunction Indicator Lamp (MIL) control circuit
P1664 Skip shift/One to four upshift upshift lamp control circuit
P1667 Reverse inhibit solenoid control circuit

Transmission......


OBD-II Transmission Codes © shbox.com
DTC Description DTC type * Default Action
P0502 Vehicle Speed Sensor (VSS)
-Low Input A * DTC P502 will be stored in PCM history
* Second gear only
* Maximum line pressure
* Freeze shift adapts from being updated
* Inhibit TCC engagement
P0560 System Voltage Malfunction D *DTC P0560 will be stored in PCM history
*All transmission output devices are off
*Freeze 1-2 shift adapts from being updated
P0712 Transmission Fluid Temperature
(TFT) Sensor Circuit -Low Input
(high temperature indicated) B *DTC P0712 will be stored in PCM history
*Transmission default temperature will be 135ºC (275ºF)
*Freeze 1-2 shift adapts from being updated
P0713 Transmission Fluid Temperature
(TFT) Sensor Circuit -High Input
(low temperature indicated) B *DTC P0713 will be stored in PCM history
*Transmission default temperature will be 135ºC (275ºF)
*Freeze 1-2 shift adapts from being updated
P0719 Brake Switch Circuit - Low Input D *DTC P0719 will be stored in PCM history
P0724 Brake Switch Circuit - High Input D *DTC P0719 will be stored in PCM history
*Freeze 1-2 shift adapts from being updated
P0742 Torque Converter Clutch (TCC) stuck ON A *DTC P0742 will be stored in PCM history
*Freeze 1-2 shift adapts from being updated
P0748 Pressure Control Solenoid (PCS) Circuit - Electrical D *DTC P0748 will be stored in PCM history
*Freeze 1-2 shift adapts from being updated
P0751 1-2 Shift Solenoid - Performance B *DTC P0751 will be stored in PCM history
P0753 1-2 Shift Solenoid - Electrical A *DTC P0753 will be stored in PCM history
*Maximum line pressure
*If in hot mode, force TCC on in 3rd and 4th gear when brake not applied and downshift not requested
*Inhibit downshifts to 2nd when speed is greater than 30 mph
*Freeze 1-2 shift adapts from being updated
P0756 2-3 Shift Solenoid - Performance B *DTC P0756 will be stored in PCM history
P0758 2-3 Shift Solenoid - Electrical A *DTC P0758 will be stored in PCM history
*Third gear only
*Freeze 1-2 shift adapts from being updated
*Maximum line pressure
*Inhibit TCC engagement
P1810 Pressure Switch Assembly (PSA) Circuit Malfunction B *DTC P1810 will be stored in PCM history
*D2 line pressure
*D4 shift pattern
*Freeze 1-2 shift adapts from being updated
P1812 Transmission Fluid Overtemperature D *DTC P1812 will be stored in PCM history
*Freeze 1-2 shift adapts from being updated
P1860 TCC PWM Solenoid Circuit - Electrical A *DTC P1860 will be stored in PCM history
*Inhibit TCC engagement
*Inhibit 4th gear if in hot mode
*Freeze 1-2 shift adapts from being updated
P1864 TCC Solenoid Circuit - Electrical A *DTC P1864 will be stored in PCM history
*Inhibit TCC engagement
*Inhibit 4th gear if in hot mode
*Freeze 1-2 shift adapts from being updated
*Maximum line pressure
P1870 Transmission Component Slipping A *DTC P1870 will be stored in PCM history
*Inhibit TCC engagement
*Inhibit 4th gear if in hot mode
*Freeze 1-2 shift adapts from being updated
*Maximum line pressure
P1886 3-2 Control Solenoid Circuit - Electrical A *DTC P1886 will be stored in PCM history
*Soft landing into 3rd gear
*Inhibit TCC engagement
*Freeze 1-2 shift adapts from being updated
*Maximum line pressure
*TCC engaged in 4th

 

Kinda defeats the purpose of using the link to my site posted above.

 

I'm sorry, I was trying to help him do it the lazy mans way!! The reason I copy and pasted was just in case people did not look at the bottom to see the OBDII section......the link takes you to OBDI DTC's. I did not even know you had that on your site (until I seen the link above my post). I know you hear this a lot but you're site is BY FAR the best LT1 info page out there!

 

No need to post a complete code list. Shoebox's link is more than adequate.

P0101 sets when the PCM does a rationality check, and the MAF air flow reading differs from the reading calculated using the speed-density method by more than 40% at high flow conditions, or 25% at high flow conditions. Could be a dirty MAF sensor, or torn rubber intake bellows/elbow..

P0125 sets when the coolant temps takes an excessive amount of time to reach ~140degF. What temperature does the dash coolant gauge indicate after 5 minutes of operation? If its not inidcating more than 140degF, the t'stat could be stuck open. If it is indicating normal (180-200degF) temps after 5 minutes, it could be a faulty coolant temp sensor in the water pump housing.

P0171/P0174 sets for each respective bank when the long term fuel correction weighted average exceeds 21.9% (= 156 avg BLM). Something is causing the engine to run lean, and forcing the PCM to increase the long term fuel corrections to very high levels. Could be the result of the MAF sensor reading too low, low fuel pressure, large vacuum leak, a tear in the rubber elbow that connects the MAF to the throttle body, etc.

P0300 sets when the PCM detects misfires, by measuring the variations in the crankshaft rotational velocity, as measured by the crank position sensor. You can sometimes pin it down to specific cylinders by scanning with a device that can read "GM enhanced parameters". This allows you to recall the misfire count by individual cylinders.

P0410 sets when the PCM cycles the AIR pump on and does not see a corresponding decrease in O2 sensor voltage, that would indicate the presence of a flow of fresh air into the exhaust.