Corvette 1997-2005

5.7L V8 VIN G Auto 2

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Trouble Code: P0301



Cylinder 1 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 1
 
Fuel delivery component fault that affects only Cylinder 1 (i.e., a contaminated, dirty or sticking fuel injector)
 
Ignition system fault (coil or plug) that affects only Cylinder 1
 

Trouble Code: P0302



Cylinder 2 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 2
 
Fuel component fault that affects only Cylinder 2 (i.e., a dirty or sticking fuel injector)
 
Ignition system fault (coil or plug) that affects only Cylinder 2
 

Trouble Code: P0303



Cylinder 3 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 3
 
Fuel component fault that affects only Cylinder 3 (i.e., a dirty or sticking fuel injector)
 
Ignition system fault (coil or plug) that affects only Cylinder 3
 

Trouble Code: P0304



Cylinder 4 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 4
 
Fuel component fault that affects only Cylinder 4 (i.e., a dirty or sticking fuel injector)
 
Ignition system fault (coil or plug) that affects only Cylinder 4
 

Trouble Code: P0305



Cylinder 5 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 5
 
Fuel component fault that affects only Cylinder 5 (i.e., a dirty or sticking fuel injector)
 
Ignition system fault (coil or plug) that affects only Cylinder 5
 

Trouble Code: P0306



Cylinder 6 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 6
 
Fuel component fault that affects only Cylinder 6 (i.e., a dirty or sticking fuel injector)
 
Ignition system fault (coil or plug) that affects only Cylinder 6
 

Trouble Code: P0307



Cylinder 7 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 7
 
Fuel component fault that affects only Cylinder 7 (i.e., a dirty or sticking fuel injector)
 
Ignition system fault (coil or plug) that affects only Cylinder 7
 

Trouble Code: P0308



Cylinder 8 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 8
 
Fuel component fault that affects only Cylinder 8 (i.e., a dirty or sticking fuel injector)
 
Ignition system fault (coil or plug) that affects only Cylinder 8
 

Trouble Code: P0325



Knock Sensor Range/Performance

Possible Causes:



Knock sensor signal circuit is open, shorted to ground or power
 
Knock sensor ground circuit is open (i.e., not mounted properly)
 
Knock sensor is damaged or has failed
 
On modules with an integrated sensor, clear the codes and retest for codes. If the same code resets, the PCM has failed.
 

Trouble Code: P0327



Knock Sensor Circuit Malfunction (Bank 1)

Possible Causes:



Knock sensor signal circuit is open, shorted to ground or power
 
Knock sensor ground circuit is open (check for proper torque)
 
Knock sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0332



Knock Sensor Circuit Malfunction (Bank 2)

Possible Causes:



Knock sensor signal circuit is open, shorted to ground or power
 
Knock sensor ground circuit is open (check for proper torque)
 
Knock sensor is damaged or has failed
 
PCM has failed
 
TSB 02-06-04-023A contains a repair procedure for this code
 

Trouble Code: P0335



Crankshaft Position Sensor Circuit Malfunction

Possible Causes:



CKP sensor signal circuit is open or shorted to ground
 
CKP sensor VREF circuit is open between the sensor and PCM
 
CKP sensor ground (Low Reference) circuit is open
 
CKP sensor is damaged or it failed (check crankshaft reluctor)
 
PCM has failed
 

Trouble Code: P0336



Crankshaft Position Sensor Range/Performance

Possible Causes:



CKP sensor signal circuit has a high resistance condition
 
CKP sensor ground (Low Reference) circuit has high resistance
 
CKP sensor is damaged or it failed (check crankshaft reluctor)
 
PCM has failed
 
Vehicle have been driven while very low on fuel
 

Trouble Code: P0341



CMP Sensor Signal Range/Performance

Possible Causes:



CMP sensor signal circuit is open, shorted to ground or VREF
 
CMP sensor signal wire is routed to close to the Generator, spark plug wires or any other possible cause of EMI/RFI
 
CMP sensor is cracked, damaged or has failed
 
PCM has failed
 
TSB 02-06-04-008 contains a repair procedure for this code
 

Trouble Code: P0342



CMP Sensor Circuit Low Input

Possible Causes:



CMP sensor signal circuit is open, shorted to ground or VREF
 
Camshaft reluctor wheel is damaged or foreign material present
 
CMP sensor is contacting the reluctor wheel or is damaged
 
PCM has failed
 

Trouble Code: P0343



CMP Sensor Circuit High Input

Possible Causes:



CMP sensor signal circuit is open, shorted to ground or shorted to VREF
 
Camshaft reluctor wheel is damaged or foreign material present
 
CMP sensor is contacting the reluctor wheel or is damaged
 
PCM has failed
 

Trouble Code: P0351



Ignition Coil 1 Control Circuit Malfunction

Possible Causes:



IC circuit is open, shorted to ground or shorted to power
 
Ignition coil (COP) is damaged or has failed
 
PCM has failed
 

Trouble Code: P0352



Ignition Coil 2 Control Circuit Malfunction

Possible Causes:



IC circuit is open, shorted to ground or shorted to power
 
Ignition coil (COP) is damaged or has failed
 
PCM has failed
 

Trouble Code: P0353



Ignition Coil 3 Control Circuit Malfunction

Possible Causes:



IC circuit is open, shorted to ground or shorted to power between the coil and the PCM
 
Ignition coil (COP) is damaged or has failed
 
PCM has failed
 

Trouble Code: P0354



Ignition Coil 4 Control Circuit Malfunction

Possible Causes:



IC circuit is open, shorted to ground or shorted to power between the coil and the PCM
 
Ignition coil (COP) is damaged or has failed, or the PCM has failed
 

Trouble Code: P0355



Ignition Coil 5 Control Circuit Malfunction

Possible Causes:



IC circuit is open, shorted to ground or shorted to power between the coil and the PCM
 
Ignition coil (COP) is damaged or has failed
 
PCM has failed
 

Trouble Code: P0356



Ignition Coil 6 Control Circuit Malfunction

Possible Causes:



IC circuit is open, shorted to ground or shorted to power between the coil and the PCM
 
Ignition coil (COP) is damaged or has failed
 
PCM has failed
 

Trouble Code: P0357



Ignition Coil 7 Control Circuit Malfunction

Possible Causes:



IC circuit is open, shorted to ground or shorted to power between the coil and the PCM
 
Ignition coil (COP) is damaged or has failed
 
PCM has failed
 

Trouble Code: P0358



Ignition Coil 8 Control Circuit Malfunction

Possible Causes:



IC circuit is open, shorted to ground or shorted to power between the coil and the PCM
 
Ignition coil (COP) is damaged or has failed
 
PCM has failed
 

Trouble Code: P0410



Secondary AIR System Performance

Possible Causes:



AIR solenoid power circuit is open (check the U/H IGN fuse)
 
AIR pump is damaged or has failed (inspect air pump for water)
 
AIR system check valves and/or pipes are damaged or leaking
 
AIR system hoses or lines are damaged, pinched or kinked
 
Base engine problem (e.g., excessive exhaust back pressure)
 
PCM has failed
 

Trouble Code: P0412



Secondary Air System Solenoid Control Circuit Malfunction

Possible Causes:



AIR solenoid control circuit is open, shorted to ground or power
 
AIR solenoid control circuit is shorted to system power (B+)
 
AIR solenoid power circuit is open (test power from IGN1 fuse)
 
AIR solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P0418



Secondary Air System Pump Relay Control Circuit Malfunction (Bank 1)

Possible Causes:



AIR relay control circuit is open, shorted to ground or power
 
AIR relay control circuit is shorted to system power (B+)
 
AIR relay power circuit is open (test power from IGN fuse)
 
AIR relay is damaged or has failed
 
PCM has failed
 

Trouble Code: P0420



Catalyst System Low Efficiency (Bank 1)

Possible Causes:



Air leaks at the exhaust manifold or in the exhaust pipes
 
Base engine problems (i.e., high engine oil or coolant usage)
 
Catalytic converter is damaged, contaminated or has failed
 
Continuous engine misfire conditions, or weak or low coil output
 
Front HO2S or rear HO2S is contaminated with fuel or moisture
 
Rear HO2S is loose in the mounting hole (check it for a leak)
 
Front HO2S older (aged) than the rear HO2S (HO2S-12 is lazy)
 

Trouble Code: P0430



Catalyst System Low Efficiency (Bank 2)

Possible Causes:



Air leaks at the exhaust manifold or in the exhaust pipes
 
Base engine problems (i.e., high engine oil or coolant usage)
 
Catalytic converter is damaged, contaminated or has failed
 
Continuous engine misfire conditions, or weak or low coil output
 
Front HO2S or rear HO2S is contaminated with fuel or moisture
 
Rear HO2S is loose in the mounting hole (check it for a leak)
 
Front HO2S older (aged) than the rear HO2S (HO2S-12 is lazy)
 

Trouble Code: P0440



EVAP System Malfunction

Possible Causes:



Charcoal canister is loaded with fuel or moisture
 
Fuel filler cap is loose, cross-threaded, damaged or wrong part
 
Fuel tank, fuel filler neck or fuel sending unit 'O' ring is leaking
 
Fuel tank pressure sensor is damaged, disconnected or it failed
 
Fuel tank vapor line(s) is clogged, damaged or disconnected
 
Purge valve vapor line is clogged, damaged, or disconnected
 
Purge or vent solenoid power circuit is open (check the fuse)
 
PCM has failed
 

Trouble Code: P0441



EVAP System No Flow During Purge

Possible Causes:



Charcoal canister is loaded with fuel or moisture
 
EVAP switch is damaged, disconnected or it failed
 
Fuel filler cap is loose, cross-threaded, damaged or wrong part
 
Fuel tank vapor line(s) is clogged, damaged or disconnected
 
Purge valve vapor line is clogged, damaged, or disconnected
 
Purge solenoid is damaged or sticking (it may be stuck closed)
 
Purge solenoid power circuit is open (check the fuse)
 
PCM has failed
 

Trouble Code: P0442



EVAP System Small Leak (0.040") Detected

Possible Causes:



Charcoal canister is loaded with fuel or moisture
 
Fuel filler cap is loose, cross-threaded, damaged or wrong part
 
Fuel tank, fuel filler neck or fuel sending unit 'O' ring is leaking
 
Fuel tank pressure sensor is damaged, disconnected or it failed
 
Fuel tank vapor line(s) is clogged, damaged or disconnected
 
Purge valve vapor line is clogged, damaged, or disconnected
 
Purge solenoid or Vent solenoid has a small leaking (sticking)
 
PCM has failed
 

Trouble Code: P0443



EVAP Purge Solenoid Control Circuit Malfunction

Possible Causes:



Purge solenoid control circuit is open or shorted to ground
 
Purge solenoid control circuit is shorted to system power (B+)
 
Purge solenoid power circuit is open (test ENG CTRL fuse)
 
Purge solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P0446



EVAP Vent System Performance

Possible Causes:



EVAP vent fresh air hose is clogged, kinked or restricted
 
EVAP Vent solenoid is contaminated, damaged or has failed
 
FTP sensor is out-of-calibration, damaged or "skewed"
 
PCM has failed
 

Trouble Code: P0449



EVAP Vent Solenoid Control Circuit Malfunction

Possible Causes:



Vent solenoid control circuit is open, shorted to ground or B+
 
Vent solenoid power circuit is open (test the ENG CTRL fuse)
 
Vent solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P0452



Fuel Tank Pressure Sensor Circuit Low Input

Possible Causes:



FTP sensor signal circuit is open or shorted to ground
 
FTP sensor VREF circuit is open or shorted to ground
 
FTP sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0453



Fuel Tank Pressure Sensor Circuit High Input

Possible Causes:



FTP sensor signal circuit is shorted to VREF or system power
 
FTP sensor ground circuit is open between sensor and PCM
 
FTP sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0461



Fuel Level Sensor Signal Range/Performance

Possible Causes:



Fuel level sensor signal circuit is open or shorted to ground between the fuel level sensor and the PCM connector
 
Fuel level sensor ground circuit is open or has high resistance
 
Fuel level sender is damaged, binding or not aligned properly
 
Instrument cluster or the PCM has failed
 

Trouble Code: P0462



Fuel Level Sensor Low Input

Possible Causes:



Fuel level sensor signal circuit is shorted to ground between the fuel level sensor and the PCM connector
 
Fuel level sender is damaged, binding or not aligned properly
 
Instrument cluster or the PCM has failed
 
TSB 01-06-04-025 contains a repair procedure for this code
 

Trouble Code: P0463



Fuel Level Sensor High Input

Possible Causes:



Fuel level sensor signal circuit is shorted to system power
 
Fuel level sensor ground circuit is open
 
Fuel level sender is damaged, binding or not aligned properly
 
PCM has failed
 

 
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