my car right now is throwing 5...I wanna know exactly what they mean and what would cause them.....

1- P0171
2- P0327
3-P0405
4-P0704
5-P0803



I do remember one was knock sensor low input which scared the crap outta me because I replaced that not long ago which is the whole reason I threw the LS6 manifold on

 

1- P0171 - Fuel Trim System Lean (Bank 1)
2- P0327 - Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)
3- P0405 - Exhaust Gas Recirculation Sensor A Circuit Low
4- P0704 - Clutch Switch Input Circuit Malfunction
5- P0803 - 1-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction

 

ok what are 2 and 4????? I just replaced those damn knock sensors


and thank you btw

 

[Ben Stein] anyone? anyone???[/Ben Stein]

 

P0327

Circuit Description

The Knock Sensor (KS) system detects engine pre-detonation. The PCM retards the spark timing based on the signals from the knock sensors. The knock sensors produce an AC voltage when specific frequencies are detected. The knock sensor voltages are an input to the PCM. The amount of AC voltage produced is proportional to the intensity of the knock.

An operating engine produces a normal amount of engine mechanical vibration (noise). The knock sensors produce an AC voltage signal from this noise. When an engine operates, the PCM learns the minimum and maximum frequency of the noise the engine produces. When the PCM determines that this frequency is less than or greater than the expected amount, a knock sensor DTC will set.


Conditions for Running the DTC

The engine speed is between 1,650 RPM and 3,000 RPM.
The MAP is greater than 49 kPa.
The engine coolant temperature is greater than 60°C (135°F).
The throttle angle is greater than 0.5%.
The engine run time is greater than 20 seconds.
Conditions for Setting the DTC
The PCM determines that this frequency is less than or greater than the expected amount for less than 3 seconds.


Action Taken When the DTC Sets

The PCM illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
The PCM records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the PCM stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the PCM records the operating conditions at the time of the failure. The PCM writes the conditions to the Freeze Frame and updates the Failure Records.


Conditions for Clearing the MIL/DTC

The PCM turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
A last test failed, or current DTC, clears when the diagnostic runs and does not fail.
A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
Use a scan tool in order to clear the MIL and the DTC.


Diagnostic Aids

Important
Remove any debris from the PCM connector surfaces before servicing the PCM. Inspect the PCM connector gaskets when diagnosing/replacing the PCM. Ensure that the gaskets are installed correctly. The gaskets prevent contaminant intrusion into the PCM.
For any test that requires probing the PCM or component harness connectors, use the Connector Test Adapter Kit . Using this kit prevents any damage to the harness connector terminals. Refer to Using Connector Test Adapters in Wiring Systems for procedures.

Inspect the knock sensor for proper installation. A knock sensor that is loose or over torqued may cause the DTC P0327 to set.
Using the Freeze Frame and/or Failure Records data may aid in locating an intermittent condition. If you cannot duplicate the DTC, the information included in the Freeze Frame and/or Failure Records data can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can also help determine how many ignition cycles the diagnostic reported a pass and/or a fail. Operate the vehicle within the same freeze frame conditions (RPM, load, vehicle speed, temperature etc.) that you observed. This will isolate when the DTC failed.
For an intermittent, refer to Symptoms .

 

Circuit Description

The Clutch Pedal Position Switch is a normally closed switch. The PCM applies a voltage (B+) to the Clutch Pedal Position Switch circuit. When the Clutch Pedal Position Switch is depressed (clutch pedal released) the circuit is open and the PCM senses a high voltage. When the Clutch Pedal Position Switch is released (clutch pedal depressed) the Clutch Pedal Position Switch contacts close, causing the applied voltage to go low.

The PCM determines if the Clutch Pedal Position Switch has failed by not sensing a clutch switch transition. The PCM monitors vehicle speed from 0 to a predetermined speed.


Conditions for Running the DTC

No VSS DTCs.


Conditions for Setting the DTC

Vehicle speed goes from 0 mph to greater than 24 mph and back to 0 mph for 2 seconds without the PCM detecting a clutch transition.
This occurs 7 times before the diagnostic reports a fault.
Action Taken When the DTC Sets
The powertrain control module (PCM) stores the DTC information into memory when the diagnostic runs and fails.
The malfunction indicator lamp (MIL) will not illuminate.
The PCM records the operating conditions at the time the diagnostic fails. The PCM stores this information in the Failure Records.
Conditions for Clearing the DTC
A last test failed, or current DTC, clears when the diagnostic runs and does not fail.
A history DTC will clear after 40 consecutive warm-up cycles, if no failures are reported by this or any other non-emission related diagnostic.
Use a scan tool in order to clear the DTC.


Diagnostic Aids

Important
Remove any debris from the PCM connector surfaces before servicing the PCM. Inspect the PCM connector gaskets when diagnosing/replacing the PCM. Ensure that the gaskets are installed correctly. The gaskets prevent contaminate intrusion into the PCM.
For any test that requires probing the PCM or a component harness connector, use the Connector Test Adapter Kit . Using this kit prevents damage to the harness/component terminals. Refer to Using Connector Test Adapters in Wiring Systems.

The following may cause an intermittent:
Poor connections; Refer to Intermittents and Poor Connections Diagnosis in Wiring Systems.
Corrosion
Mis-routed harness
Rubbed through wire insulation
Broken wire inside the insulation
Using Freeze Frame and/or Failure Records data may aid in locating an intermittent condition. If you cannot duplicate the DTC, the information included in the Freeze Frame and/or Failure Records data can aid in determining how many miles since the DTC set. The Fail Counter and Pass Counter can also aid determining how many ignition cycles the diagnostic reported a pass and/or a fail. Operate the vehicle within the same freeze frame conditions (RPM, load, vehicle speed, temperature etc.) that you observed. This will isolate when the DTC failed.

 

thanks man......and ONE more question hahaha (yes I'm a total n00b) bank 1 for the 02 sensors...that's the first one on the left side right?

 

Bank1 = Drivers side
Bank 2 = Passenger side
Sensor 1 = Pre Cat
Sensor 2 = Post Cat