Neon, 2000-2005

2.4L L4 - Std 7

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Trouble Code: P1798



A/T Transmission Fluid Is Burnt Or Contaminated

Possible Causes:



ATF is burnt, contaminated or very dirty
 
Extremely low battery (system) voltage
 
Transmission pan has debris
 
Transmission has internal damage causing the vehicle shudder
 

Trouble Code: P1799



A/T Calculated Oil Temperature In Use Malfunction

Possible Causes:



TFT Sensor signal circuit is open
 
TFT Sensor ground circuit is open
 
TFT Sensor signal circuit is shorted to ground
 
TFT Sensor signal circuit is shorted to VREF (5v)
 
TFT Sensor signal not correct for the ATF fluid temperature
 
Speed Sensor signal circuit is open or shorted to ground
 
Speed Sensor signal circuit is shorted to system power
 
TCM oil temperature Sensor high or low circuit has failed
 

Trouble Code: P1854



Throttle Inlet Pressure BARO Reading Out Of Range

Possible Causes:



Inspect the hoses and tubing to the turbo charger assembly
 
Review results of Solenoid Tests (Test 1, 2, 3 and 4 results)
 
TIP signal circuit is open (may be an intermittent fault)
 
TIP ground circuit is open (may be an intermittent fault)
 
PCM has failed
 

Trouble Code: P1899



A/T Park Neutral Switch Stuck in Park Position or In Gear

Possible Causes:



P/N switch signal circuit is open between the switch and PCM
 
P/N switch signal circuit is shorted to Sensor or chassis ground
 
P/N switch ground circuit is open (at the switch mounting point)
 
P/N switch is stuck in P/N position, or stuck in Drive position
 
P/N switch is damaged or has failed
 
PCM has failed
 

Trouble Code: P2302



Ignition Coil No. 1 Secondary Circuit Insufficient Ionization

Possible Causes:



Intermittent condition
 
Cylinder No. 1 spark plug or wire is damaged or it has failed
 
Ignition Coil No. 1 is damaged or it has failed
 
Ignition coil control circuit is open or shorted to ground
 
ASD relay output circuit problems
 
PCM has failed
 

Trouble Code: P2305



Ignition Coil No. 2 Secondary Circuit Insufficient Ionization

Possible Causes:



Intermittent condition
 
Cylinder No. 2 spark plug or wire is damaged or it has failed
 
Ignition Coil No. 2 is damaged or it has failed
 
Ignition coil control circuit is open or shorted to ground
 
ASD relay output circuit problems
 
PCM has failed
 

Trouble Code: P2308



Ignition Coil No. 3 Secondary Circuit Insufficient Ionization

Possible Causes:



Intermittent condition
 
Cylinder No. 3 spark plug or wire is damaged or it has failed
 
Ignition Coil No. 3 is damaged or it has failed
 
Ignition coil control circuit is open or shorted to ground
 
ASD relay output circuit problems
 
PCM has failed
 

Trouble Code: P2311



Ignition Coil No. 4 Secondary Circuit Insufficient Ionization

Possible Causes:



Intermittent condition
 
Cylinder No. 4 spark plug or wire is damaged or it has failed
 
Ignition Coil No. 4 is damaged or it has failed
 
Ignition coil control circuit is open or shorted to ground
 
ASD relay output circuit problems
 
PCM has failed
 

Trouble Code: P2314



Ignition Coil No. 5 Secondary Circuit Insufficient Ionization

Possible Causes:



Intermittent condition
 
Cylinder No. 5 spark plug or wire is damaged or it has failed
 
Ignition Coil No. 5 is damaged or it has failed
 
Ignition coil control circuit is open or shorted to ground
 
ASD relay output circuit problems
 
PCM has failed
 

Trouble Code: P2317



Ignition Coil No. 6 Secondary Circuit Insufficient Ionization

Possible Causes:



Intermittent condition
 
Cylinder No. 6 spark plug or wire is damaged or it has failed
 
Ignition Coil No. 6 is damaged or it has failed
 
Ignition coil control circuit is open or shorted to ground
 
ASD relay output circuit problems
 
PCM has failed
 

Trouble Code: P2320



Ignition Coil No. 7 Secondary Circuit Insufficient Ionization

Possible Causes:



Cylinder No. 7 spark plug or wire is damaged or it has failed
 
Ignition Coil No. 7 is damaged or it has failed
 
Ignition coil control circuit is open or shorted to ground
 
PCM has failed
 

Trouble Code: P2323



Ignition Coil No. 8 Secondary Circuit Insufficient Ionization

Possible Causes:



Cylinder No. 8 spark plug or wire is damaged or it has failed
 
Ignition Coil No. 8 is damaged or it has failed
 
Ignition coil control circuit is open or shorted to ground
 
PCM has failed
 

Trouble Code: P2503



Charging System Voltage Low

Possible Causes:



Battery sense circuit has a high resistance condition
 
Generator ground circuit has a high resistance condition
 
Generator field ground circuit is open
 
Generator field control circuit is open or shorted to ground
 
Generator is damaged or it has failed
 

 
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