ION, L-Series, S-Series 1999-2005

2.2L I4 VIN F Std 2

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Trouble Code: P0327



Knock Sensor Circuit Malfunction

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 it has failed
 
PCM has failed
 
TSB 98-T-26 contains a repair procedure for this trouble code
 

Trouble Code: P0336



Crankshaft Reference Signal Range/Performance

Possible Causes:



CKP sensor circuit is open (may be an intermittent fault)
 
CKP sensor circuit is shorted to ground (may be intermittent)
 
CKP sensor signal wires routed too close to Generator, spark plug wires or any other possible cause of EMI/RFI interference
 
CKP sensor is damaged or it has failed
 

Trouble Code: P0340



Camshaft Position Sensor Circuit Malfunction

Possible Causes:



Check Ignition system wires for low/high resistance conditions
 
Check for "arcing" conditions at the coils or spark plug boots
 
Check for corroded or loose spark plug wire ends or terminals
 
Check for carbon tracking on the spark plug insulators
 
CMP sensor signal circuit is open or shorted (intermittent fault)
 
CMP sensor is damaged or it has failed (an intermittent fault)
 

Trouble Code: P0341



Camshaft Position Sensor Signal Range/Performance

Possible Causes:



CKP sensor circuit is open (may be an intermittent fault)
 
CKP sensor circuit is shorted to ground (may be intermittent)
 
CKP sensor signal wires routed too close to Generator, spark plug wires or any other possible cause of EMI/RFI interference
 
CKP sensor is damaged or it has failed
 
CMP sensor ground circuit is open (if DTC P0103, P0108, P0113, P0118, P0123, P0223, P0406 and P1271 are also set, check for an open signal return circuit)
 
CMP sensor ground circuit is open (if DTC P0102, P0107 and P0405 are also set, check for an open signal return circuit)
 

Trouble Code: P0401



Insufficient EGR Flow Detected

Possible Causes:



EGR valve has carbon buildup on the pintle or it is stuck closed
 
EGR passage is blocked
 
MAP sensor signal is out-of-range (skewed) or it has failed
 
TSB 01-06-04-031 contains a repair procedure for this code
 

Trouble Code: P0410



Secondary Air System Performance

Possible Causes:



AIR solenoid power circuit is open (check the Air pump 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 pump relay is damaged or it 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 it 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)
 

Trouble Code: P0440



EVAP System Performance

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
 
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: P0446



EVAP Vent System Performance

Possible Causes:



Charcoal canister is clogged or plugged (may be full of water)
 
Vent solenoid fresh air hose is clogged, kinked or restricted
 
Vent solenoid is stuck in "closed" position
 
Vent solenoid is damaged (solenoid resistance is 15-35 ohms)
 
PCM has failed
 

Trouble Code: P0452



Fuel Tank Pressure Sensor Circuit Low Input

Possible Causes:



FTP sensor connector is damaged, open or shorted
 
FTP sensor signal circuit is shorted to sensor ground
 
FTP sensor VREF circuit is open or shorted to sensor ground
 
FTP sensor is damaged or it has failed
 
PCM has failed
 
TSB 00-08-45-004A contains a repair procedure for this code
 

Trouble Code: P0453



Fuel Tank Pressure Sensor Circuit High Input

Possible Causes:



FTP sensor connector is damaged or shorted
 
FTP sensor signal circuit is open
 
FTP sensor signal circuit is shorted to VREF (5v)
 
FTP sensor is damaged or it has failed
 
PCM has failed
 
TSB 00-08-45-004A contains a repair procedure for this code
 

Trouble Code: P0461



Fuel Level Sensor Signal Range/Performance

Possible Causes:



Fuel level sensor is stuck in one position
 
Fuel level sensor is damaged or it has failed
 
High resistance in the fuel level sensor ground circuit
 
Loose fuel tank baffle interfering with the fuel level sensor
 
PCM has failed
 

Trouble Code: P0462



Fuel Level Sensor Circuit Low Input

Possible Causes:



Fuel level sensor is stuck in one position
 
Fuel level sensor signal circuit is shorted to ground
 
Fuel level sensor is damaged or it has failed
 
Loose fuel tank baffle interfering with the fuel level sensor
 
PCM has failed
 
TSB 00-08-45-004A contains a repair procedure for this code
 

Trouble Code: P0463



Fuel Level Sensor Circuit High Input

Possible Causes:



Fuel level sensor is stuck in a single position
 
Fuel level sensor signal circuit is shorted to VREF power
 
Fuel level sensor ground circuit is open
 
Fuel level sensor is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0480



Cooling Fan Relay 1 Control Circuit Malfunction

Possible Causes:



CFAN 1 Relay control circuit is open or shorted to ground
 
CFAN 1 Relay control circuit is shorted to system power
 
CFAN 1 Relay is damaged or it has failed
 
PCM has failed (the internal control driver is open)
 

Trouble Code: P0481



Cooling Fan Relay 1 Control Circuit Malfunction

Possible Causes:



High Speed CFAN Relay control circuit is open
 
High Speed CFAN relay control circuit is shorted to power (B+)
 
High Speed CFAN relay is damaged or it has failed
 
PCM has failed (the internal control driver is open)
 

Trouble Code: P0502



Output Shaft Speed Sensor Circuit Malfunction

Possible Causes:



Output shaft rotor is chipped, damaged or not properly aligned
 
OSS tip contains debris or metal shavings (an intermittent fault)
 
OSS positive (+) or negative (-) circuit open or shorted
 
OSS is damaged (OSS resistance is from 1530-1870 ohms)
 
PCM is damaged
 

Trouble Code: P0503



Output Shaft Speed Sensor Circuit Malfunction

Possible Causes:



Output shaft rotor is chipped, damaged or not properly aligned
 
OSS tip contains debris or metal shavings (an intermittent fault)
 
OSS positive (+) or negative (-) circuit open or shorted
 
OSS is damaged (OSS resistance is from 1530-1870 ohms)
 
PCM is damaged
 

Trouble Code: P0506



IAC System Too Low

Possible Causes:



Accessory drive component "loading" the engine
 
Air inlet duct is collapsed, loose or air filter element is clogged
 
Base engine problem (i.e., compression or misfire condition)
 
Idle air inlet passage or throttle bore is dirty or full of deposits
 
IAC valve is damaged or it has failed
 

Trouble Code: P0507



IAC System Too High

Possible Causes:



Air inlet duct is collapsed, loose or air filter element is clogged
 
Base engine problem (i.e., compression or misfire condition)
 
Idle air inlet passage or throttle bore is dirty or full of deposits
 
IAC valve is damaged or it has failed
 
PCV valve incorrect or improperly installed, or hoses leaking
 
Throttle linkage, throttle plate or stop screw is damaged/binding
 

Trouble Code: P0530



A/C Refrigerant Pressure Sensor Circuit Malfunction

Possible Causes:



A/C refrigerant pressure sensor connector is damaged or open
 
A/C refrigerant pressure sensor circuit is open
 
A/C refrigerant pressure sensor circuit is shorted to ground
 
A/C refrigerant pressure VREF circuit is open or shorted
 
A/C refrigerant pressure sensor is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0532



A/C Refrigerant Pressure Sensor Circuit Low Input

Possible Causes:



A/C refrigerant pressure sensor connector damaged or shorted
 
A/C refrigerant pressure sensor circuit is shorted to ground
 
A/C refrigerant pressure VREF circuit is open or shorted
 
A/C refrigerant pressure sensor is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0533



A/C Refrigerant Pressure Sensor Circuit High Input

Possible Causes:



A/C refrigerant pressure sensor connector damaged or shorted
 
A/C refrigerant pressure sensor circuit is shorted to VREF (5v)
 
A/C refrigerant pressure sensor is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0560



System Voltage Signal Range/Performance

Possible Causes:



Main relay output circuit is open (may be an intermittent fault)
 
Main relay is damaged (use the repair chart for U2105 for diagnosis of the main relay)
 
Possible high resistance condition in the fusible link to battery
 
PCM is damaged
 
Vehicle may have been used to "jump start" another vehicle
 

Trouble Code: P0562



System Voltage Too Low

Possible Causes:



Ignition system voltage circuit has a high resistance condition
 
Generator is damaged or it has failed (generator output too low)
 
Possible high resistance condition in the fusible link to battery
 
PCM has failed
 
Vehicle may have been used to "jump start" another vehicle
 

Trouble Code: P0563



System Voltage Too High

Possible Causes:



Ignition system voltage circuit has a high resistance condition
 
Generator is damaged or it has failed (generator output too low)
 
Possible high resistance condition in the fusible link to battery
 
PCM has failed
 
Vehicle may have been used to "jump start" another vehicle
 

Trouble Code: P0601



PCM Or TCM Memory Error

Possible Causes:



Perform the Diagnostic System Check for the PCM or the TCM
 
Record any related trouble codes in memory
 
PCM has failed (replace and reprogram the PCM or TCM)
 
Perform the Security System (Passlock) Relearn Procedure
 

Trouble Code: P0602



PCM Or TCM Not Programmed

Possible Causes:



Perform the Diagnostic System Check for the PCM or TCM
 
Record any related trouble codes in memory
 
Reprogram the PCM or TCM and recheck for related trouble codes. If the same code resets, replace and reprogram the PCM or the TCM (depending upon which one set the code).
 
Perform the Security System (Passlock) Relearn Procedure
 

Trouble Code: P0603



PCM or TCM NVRAM Memory Error

Possible Causes:



Record any related trouble codes in memory
 
PCM has failed (replace it and reprogram the new PCM)
 
Perform the Security System (Passlock) Relearn Procedure
 

Trouble Code: P0606



PCM Internal Performance Malfunction

Possible Causes:



Record any related trouble codes in memory
 
Reprogram the PCM and recheck for any related trouble codes
 
If it resets, the PCM may have to be replaced
 
PCM has failed (replace it and reprogram the new PCM)
 
Perform the Security System (Passlock) Relearn Procedure
 

Trouble Code: P0621



Generator Turn -On- Circuit Malfunction

Possible Causes:



Generator Turn -On- signal is open or shorted to ground
 
Generator battery voltage output circuit has high resistance
 
PCM has failed
 

Trouble Code: P0622



Generator Field Duty Cycle Circuit Malfunction

Possible Causes:



Generator connector is damaged, open or shorted
 
Generator -F- terminal PWM circuit is open or shorted to ground
 
PCM has failed
 

Trouble Code: P1133



HO2S-11 (Bank 1 Sensor 1) Slow Response

Possible Causes:



Exhaust leak present in the exhaust manifold or exhaust pipes
 
Fuel system is too rich (fuel pressure too high, fuel pressure regulator leaking, or one or more fuel injectors sticking/leaking)
 
HO2S connector is damaged, open or shorted (check for water)
 
HO2S element is silicon, water or fuel contaminated or it failed
 
PCM has failed
 

Trouble Code: P1134



HO2S-12 (Bank 1 Sensor 2) Slow Response

Possible Causes:



Exhaust leak present in the exhaust manifold or exhaust pipes
 
Fuel system is too rich (fuel pressure too high, fuel pressure regulator leaking, or one or more fuel injectors sticking/leaking)
 
HO2S connector is damaged, open or shorted (check for water)
 
HO2S element is silicon, water or fuel contaminated or it failed
 
PCM has failed
 

Trouble Code: P1137



HO2S-12 (Bank 1 Sensor 2) Circuit Low Voltage

Possible Causes:



Exhaust leak present in the exhaust manifold or exhaust pipes
 
Fuel system is too rich (fuel pressure too high, fuel pressure regulator leaking, or one or more fuel injectors sticking/leaking)
 
HO2S element is silicon, water or fuel contaminated or it failed
 

Trouble Code: P1138



HO2S-12 (Bank 1 Sensor 2) Circuit High Voltage

Possible Causes:



Exhaust leak present in the exhaust manifold or exhaust pipes
 
Fuel system is too rich (fuel pressure too high, fuel pressure regulator leaking, or one or more fuel injectors sticking/leaking)
 
HO2S element is silicon, water or fuel contaminated or it failed
 

Trouble Code: P1171



Fuel System Lean During Acceleration

Possible Causes:



Exhaust leak present in the exhaust manifold or exhaust pipes
 
Fuel system is too lean (check for low fuel pressure)
 
Fuel injector malfunction (one or more fuel injectors restricted)
 
HO2S element is silicon, water or fuel contaminated or it failed
 

Trouble Code: P1336



Excessive Crankshaft Variation Symptom

Possible Causes:



Perform the Crankshaft Variation Relearn Procedure
 
Excessive air gap, poor reluctor machining quality or "run-out"
 
EMI or RFI "noise" on CKP sensor circuit - repeat the "relearn"
 
The CKP "relearn" procedure will not run if there are any DTC P0300 Series codes in memory - repair these codes first!
 
Engine too cold to run the procedure - allow engine to warm up
 

Trouble Code: P1441



EVAP System Flow During Non-Purge

Possible Causes:



FTP sensor is out-of-calibration (skewed) or it has failed
 
Purge solenoid valve is damaged or leaking
 
Purge solenoid valve has failed (may be stuck in open position)
 
TSB 02-06-04-038 contains a repair procedure for this code
 

 
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