Express, Savana, G1500, G2500, G3500, 1998-2005

5.3L V8 VIN T Auto 2

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Trouble Code: P0182



Fuel Tank Temperature Sensor Circuit Low Input

Possible Causes:



FTT sensor signal circuit is shorted to chassis or sensor ground
 
FTT sensor is damaged, skewed or it has failed
 
PCM has failed
 

Trouble Code: P0183



Fuel Tank Temperature Sensor Circuit High Input

Possible Causes:



FTT sensor signal circuit or ground circuit is open
 
FTT sensor signal circuit is shorted to VREF
 
FTT sensor is damaged, skewed or it has failed
 
PCM has failed
 

Trouble Code: P0187



Fuel Rail Temperature Sensor Circuit Low Input

Possible Causes:



FRT sensor signal circuit shorted to chassis or sensor ground
 
FRT sensor is damaged, skewed or it has failed
 
PCM has failed
 

Trouble Code: P0188



Fuel Rail Temperature Sensor Circuit High Input

Possible Causes:



FRT sensor signal circuit or ground circuit is open
 
FRT sensor signal circuit is shorted to VREF
 
FRT sensor is damaged, skewed or it has failed
 
PCM has failed
 

Trouble Code: P0191



Fuel Rail Pressure Sensor Circuit Low Input

Possible Causes:



FRP Sensor 5v VREF circuit has a high resistance condition
 
FRP sensor signal circuit has a high resistance condition
 
FRP sensor is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0193



Fuel Rail Pressure Sensor Circuit High Input

Possible Causes:



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

Trouble Code: P0200



Fuel Injector Circuit Malfunction

Possible Causes:



Fuel injector control circuit is open between injector and PCM
 
Fuel injector control circuit is grounded between injector and PCM
 
Fuel injector power circuit is open (test INJ A, B in fuse block)
 
Fuel injector is damaged or has failed
 
PCM is damaged
 

Trouble Code: P0218



Transmission Fluid Over-Temperature (4L60-E, 4L80-E)

Possible Causes:



ATF is low, contaminated, burnt or dirty
 
Customer driving habits (i.e., excessive trailer towing)
 
Engine cooling system has an airflow restriction
 
Transmission cooling system has an airflow restriction
 
Transmission cooler lines are bent, damaged or restricted
 
Transmission internal failure (i.e., low line pressure, TCC fault)
 

Trouble Code: P0220



Throttle Position Sensor 2 Circuit Malfunction

Possible Causes:



TP Sensor 2 signal circuit is open or shorted to ground
 
TP Sensor 2 VREF (5v) circuit is open, or TP Sensor 2 ground circuit is open
 
TP Sensor 2 is damaged or has failed
 
PCM is damaged
 
TSB 03-04-06-034 contains a repair procedure for this code
 

Trouble Code: P0230



Fuel Pump Relay Control Circuit Malfunction

Possible Causes:



Fuel pump relay control circuit is open or shorted to ground
 
Fuel pump relay power circuit is open (PCM Fuse B fuse block)
 
Fuel pump relay is damaged or it has failed
 
PCM is damaged
 

Trouble Code: P0300



Multiple Cylinder Misfire Detected

Possible Causes:



Base engine mechanical fault that affects one or more cylinders
 
EGR valve is stuck open or PCV system has a vacuum leak
 
EVAP system problem or the EVAP canister is fuel saturated
 
Fuel metering fault that affects more than one cylinder
 
Fuel pressure too low or too high, fuel supply contaminated
 
IC control circuit is shorted to ground (an intermittent fault)
 
Ignition system fault (a coil) that affects more than one cylinder
 
MAF sensor contamination (it can cause a very lean condition)
 
TSB 03-06-04-030 contains a repair procedure for this code
 

Trouble Code: P0301



Cylinder 1 Misfire Detected

Possible Causes:



Base engine mechanical problem that affects only Cylinder 1
 
Fuel delivery component fault (injector) that affects Cylinder 1
 
Ignition system problem (coil, plug) that affects only Cylinder 1
 

Trouble Code: P0302



Cylinder 2 Misfire Detected

Possible Causes:



Base engine mechanical problem that affects only Cylinder 2
 
Fuel delivery component fault (injector) that affects Cylinder 2
 
Ignition system problem (coil, plug) that affects only Cylinder 2
 

Trouble Code: P0303



Cylinder 3 Misfire Detected

Possible Causes:



Base engine mechanical problem that affects only Cylinder 3
 
Fuel delivery component fault (injector) that affects Cylinder 3
 
Ignition system problem (coil, plug) that affects only Cylinder 3
 

Trouble Code: P0304



Cylinder 4 Misfire Detected

Possible Causes:



Base engine mechanical problem that affects only Cylinder 4
 
Fuel delivery component fault (injector) that affects Cylinder 4
 
Ignition system problem (coil, plug) that affects only Cylinder 4
 

Trouble Code: P0305



Cylinder 5 Misfire Detected

Possible Causes:



Base engine mechanical problem that affects only Cylinder 5
 
Fuel delivery component fault (injector) that affects Cylinder 5
 
Ignition system problem (coil, plug) that affects only Cylinder 5
 

Trouble Code: P0306



Cylinder 6 Misfire Detected

Possible Causes:



Base engine mechanical problem that affects only Cylinder 6
 
Fuel component fault that affects only Cylinder 6 (i.e., a contaminated, dirty or sticking fuel injector)
 
Ignition system problem (coil, plug) that affects only Cylinder 6
 

Trouble Code: P0307



Cylinder 7 Misfire Detected

Possible Causes:



Base engine mechanical problem that affects only Cylinder 7
 
Fuel component fault that affects only Cylinder 7 (i.e., a dirty or sticking fuel injector)
 
Ignition system problem (coil, plug) that affects only Cylinder 7
 

Trouble Code: P0308



Cylinder 8 Misfire Detected

Possible Causes:



Base engine mechanical problem that affects only Cylinder 8
 
Fuel component fault that affects only Cylinder 8 (i.e., a dirty or sticking fuel injector)
 
Ignition system problem (coil, plug) that affects only Cylinder 8
 

Trouble Code: P0315



Crankshaft Position Sensor Variation Not Learned

Possible Causes:



CKP sensor signal circuit has an interference condition (EMI)
 
Crankshaft main bearings worn or reluctor wheel is damaged
 
Crankshaft run-out is excessive or the crankshaft is damaged
 
ECT sensor not within the conditions for running the code test
 
Ignition switch is on, but the battery has insufficient voltage
 
PCM power disconnected with key on (erases learned values)
 
Debris that passes between the CKP sensor and reluctor wheel
 

Trouble Code: P0325



Knock Sensor Circuit Malfunction

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 Low Input (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 it has failed
 
PCM has failed
 

Trouble Code: P0332



Knock Sensor Circuit Low Input (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 it has failed
 
PCM has failed
 

Trouble Code: P0335



CKP Sensor Circuit Malfunction

Possible Causes:



CKP sensor signal circuit is open or shorted to ground
 
CKP sensor ground (low reference) circuit is open
 
CKP sensor power circuit is open between sensor and the PCM
 
Crankshaft reluctor wheel is damaged or improper installation
 
CKP sensor contacting the reluctor wheel or it has failed
 
PCM has failed
 

Trouble Code: P0336



Crankshaft Reference Sensor Signal Range/Performance

Possible Causes:



CKP sensor connector is damaged, loose or shorted
 
CKP sensor signal circuit is open or shorted (intermittent fault)
 
CKP sensor contacting the reluctor wheel or it has failed
 
CKP sensor is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0341



CMP Sensor Signal Range/Performance

Possible Causes:



CMP sensor signal circuit is open, shorted to ground or VREF
 
CMP sensor is cracked or damaged (check the reluctor wheel)
 
CMP sensor wiring routed to close to Generator or plug wires
 
Reluctor wheel is damaged or the sensor is touching the wheel
 
PCM has failed
 

Trouble Code: P0343



CMP Sensor Circuit High Input

Possible Causes:



CMP sensor connector is damaged, loose or shorted
 
CMP sensor low reference circuit is open 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 (B+)
 
IC ground (Low REF) circuit or Module ground circuit is open
 
IC power circuit is open (check the INJ fuse in U/H fuse block)
 
Ignition Coil 1 is damaged or it 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 (B+)
 
IC ground (Low REF) circuit or Module ground circuit is open
 
IC power circuit is open (check the INJ fuse in U/H fuse block)
 
Ignition Coil 2 is damaged or it 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 (B+)
 
IC ground (Low REF) circuit or Module ground circuit is open
 
IC power circuit is open (check the INJ fuse in U/H fuse block)
 
Ignition Coil 3 is damaged or it 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 (B+)
 
IC ground (Low REF) circuit or Module ground circuit is open
 
IC power circuit is open (check the INJ fuse in U/H fuse block)
 
Ignition Coil 4 is damaged or it has failed
 
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 (B+)
 
IC ground (Low REF) circuit or Module ground circuit is open
 
IC power circuit is open (check the INJ fuse in U/H fuse block)
 
Ignition Coil 5 is damaged or it 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 (B+)
 
IC ground (Low REF) circuit or Module ground circuit is open
 
IC power circuit is open (check the INJ fuse in U/H fuse block)
 
Ignition Coil 6 is damaged or it 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 (B+)
 
IC ground (Low REF) circuit or Module ground circuit is open
 
IC power circuit is open (check the INJ fuse in U/H fuse block)
 
Ignition Coil 7 is damaged or it 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 (B+)
 
IC ground (Low REF) circuit or Module ground circuit is open
 
IC power circuit is open (check the INJ fuse in U/H fuse block)
 
Ignition Coil 8 is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0404



EGR Open Position Signal Range/Performance

Possible Causes:



EGR sensor signal circuit is open, shorted to ground or power
 
EGR sensor ground or VREF circuit is open
 
EGR valve seat or pintle contains debris or carbon (inspect and clean)
 
EGR valve is contaminated, clogged, damaged or has failed
 
PCM has failed
 

Trouble Code: P0405



EGR Position Sensor Circuit Low Input

Possible Causes:



EGR position sensor signal circuit is open
 
EGR position sensor signal circuit is shorted to ground
 
EGR position sensor VREF circuit is open or shorted to ground
 
EGR position sensor 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)
 
TSB 81-65-37 contains a repair procedure for this code
 

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)
 
TSB 81-65-37 contains a repair procedure for this code
 

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 or purge valve vapor lines clogged or disconnected
 
Purge solenoid or Vent solenoid has a small leaking (sticking)
 
PCM has failed
 

 
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