1999 Chrysler 300M Diagnostic Trouble Codes

Below are all the potential codes for the 1999 Chrysler 300M with a 2.7L V6, VIN R.

Trouble Code: P0016

Crankshaft/Camshaft Timing Misalignment

Possible Causes:

Base engine problem (i.e., the camshaft timing is not correct) Intermittent condition CKP or CMP Sensor signal is erratic (check with lab scope) Tone wheel or pulse wheel is damaged or contains debris CKP or CMP Sensor, harness or connector has failed PCM has failed 

Trouble Code: P0030

O2 (B1 S1) Heater Circuit Fault

Possible Causes:

O2 assembly is damaged or it has failed O2 heater control circuit is open, shorted to ground or B+ O2 heater ground circuit is open O2 heater element is damaged or has failed PCM has failed 

Trouble Code: P0031

O2 (B1 S1) Heater Circuit Low

Possible Causes:

O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed 

Trouble Code: P0032

O2 (B1 S1) Heater Circuit High

Possible Causes:

O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed 

Trouble Code: P0036

O2 (B1 S2) Heater Circuit Fault

Possible Causes:

O2 assembly is damaged or it has failed O2 heater control circuit is open, shorted to ground or B+ O2 heater ground circuit is open O2 heater element is damaged or has failed PCM has failed 

Trouble Code: P0037

O2 (B1 S2) Heater Circuit Low

Possible Causes:

O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed 

Trouble Code: P0038

O2 (B1 S2) Heater Circuit High

Possible Causes:

O2 Sensor failed or improper operation O2 heater element is damaged or failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed 

Trouble Code: P0050

O2 (B2 S1) Heater Relay Circuit Low

Possible Causes:

O2 assembly is damaged, or the O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed 

Trouble Code: P0051

O2 (B2 S1) Heater Relay Circuit Low

Possible Causes:

O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed 

Trouble Code: P0052

O2 (B2 S1) Heater Relay Circuit High

Possible Causes:

O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed 

Trouble Code: P0056

O2 (B2 S1) Heater Relay Circuit Low

Possible Causes:

O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed 

Trouble Code: P0057

O2 (B2 S2) Heater Relay Circuit Low

Possible Causes:

O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed 

Trouble Code: P0058

O2 (B2 S2) Heater Relay Circuit High

Possible Causes:

O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed 

Trouble Code: P0068

MAP Sensor/TP Sensor Correction – High Flow/Vacuum Leak

Possible Causes:

An engine vacuum leak present High resistance in the MAP ground circuit, MAP Sensor signal or VREF (5v) circuit High resistance in the TP ground, TP circuit or the TP Sensor VREF (5v) circuit MAP Sensor is damaged or it has failed TP Sensor is damaged or it has failed PCM has failed 

Trouble Code: P0070

Ambient Temperature Sensor Circuit Stuck

Possible Causes:

AAT Sensor signal circuit shorted to power (VREF) AAT Sensor ground circuit is open AAT Sensor signal circuit is open AAT Sensor signal circuit is shorted to ground PCM High or Low circuit is damaged or it has failed 

Trouble Code: P0071

Ambient Temperature Sensor Performance

Possible Causes:

AAT Sensor circuit open, shorted to ground or VREF AAT Sensor voltage below 1.0v AAT signal circuit is open or is shorted to ground, to battery voltage or to Sensor ground AAT Sensor ground circuit is open AAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed 

Trouble Code: P0072

Ambient Temperature Sensor Circuit Low Input

Possible Causes:

AAT Sensor internal failure AAT signal circuit shorted to ground AAT signal circuit shorted to Sensor ground PCM has failed 

Trouble Code: P0073

Ambient Temperature Sensor Circuit High Input

Possible Causes:

AAT Sensor signal shorted to VREF (5v) or battery voltage AAT Sensor signal circuit or Sensor ground circuit is open AAT Sensor is damaged (it may be open) PCM has failed 

Trouble Code: P0106

BARO Out-Of-Range at Key On / MAP Sensor Low

Possible Causes:

Loss of 5-volt supply from PCM (internal failure) Sensor 5-volt supply circuit is shorted, open or grounded Sensor signal circuit is open or shorted to ground Sensor has failed PCM has failed 

Trouble Code: P0107

MAP Sensor Circuit Low Input

Possible Causes:

MAP Sensor connector is damaged or shorted MAP Sensor 5v supply circuit is open or it is shorted to ground MAP Sensor signal circuit is shorted to ground MAP Sensor has failed PCM has failed 

Trouble Code: P0108

MAP Sensor Circuit High Input

Possible Causes:

MAP Sensor signal circuit open, or the ground circuit is open MAP Sensor signal circuit is shorted to VREF (5v) MAP Sensor is damaged or it has failed PCM has failed 

Trouble Code: P0110

IAT Sensor Circuit High or Low Input

Possible Causes:

IAT Sensor signal circuit is open, shorted to ground or to VREF IAT Sensor signal circuit has a high resistance condition IAT Sensor is damaged or it has failed PCM has failed 

Trouble Code: P0111

IAT Sensor Performance

Possible Causes:

IAT Sensor signal circuit is open, shorted to ground or VREF IAT Sensor ground circuit is open IAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed 

Trouble Code: P0112

IAT Sensor Circuit Low Input

Possible Causes:

IAT Sensor signal circuit is shorted to chassis ground IAT Sensor signal circuit is shorted to Sensor ground IAT Sensor is damaged or it has failed (an internal short circuit) PCM has failed 

Trouble Code: P0113

IAT Sensor Circuit High Input

Possible Causes:

IAT Sensor signal circuit shorted to VREF (5v) IAT Sensor signal circuit is open, or the ground circuit is open IAT Sensor is damaged or it has failed (an internal open circuit) PCM has failed 

Trouble Code: P0116

ECT Sensor Circuit Performance

Possible Causes:

ECT Sensor signal circuit is open or it is shorted to ground ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed 

Trouble Code: P0117

ECT Sensor Circuit Low Input

Possible Causes:

ECT Sensor signal circuit is shorted to chassis ground ECT Sensor signal circuit is shorted to Sensor ground ECT Sensor is damaged or it has failed (it may be shorted) PCM has failed 

Trouble Code: P0118

ECT Sensor Circuit High Input

Possible Causes:

ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor signal circuit is open ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed (possible open circuit) PCM has failed 

Trouble Code: P0121

TP Sensor Does Not Agree With MAP

Possible Causes:

MAP Sensor and/or TP Sensor VREF (5v) not present MAP or TP Sensor ground circuit has high resistance MAP or TP Sensor signal circuit has high resistance TP Sensor is damaged or has failed PCM has failed 

Trouble Code: P0122

TP Sensor Circuit Low Input

Possible Causes:

TP Sensor VREF (5v) circuit is open or shorted to ground TP Sensor 5v supply circuit is shorted to ground TP Sensor signal circuit is shorted to ground TP Sensor is damaged or it has failed Possible intermittent condition PCM has failed 

Trouble Code: P0123

TP Sensor Circuit High Input

Possible Causes:

TP Sensor sweep TP Sensor ground circuit is open TP Sensor signal circuit is open or is shorted to VREF (5v) TP Sensor is damaged or has failed (an internal open circuit) Possible intermittent condition PCM has failed 

Trouble Code: P0125

Closed Loop Temperature Not Reached

Possible Causes:

Check the operation of the thermostat (it may be stuck open) ECT Sensor is damaged or it is out-of-calibration Inspect for low coolant level or for an incorrect coolant mixture 

Trouble Code: P0128

Thermostat Rationality Test

Possible Causes:

Check the operation of the thermostat (it may be stuck open) ECT Sensor is contaminated, damaged or it has failed Inspect for low coolant level or for an incorrect coolant mixture 

Trouble Code: P0129

Barometric Pressure Out-Of-Range

Possible Causes:

IAC motor control low or control high circuit has failed MAP Sensor VREF (5v) circuit is open or shorted to ground MAP Sensor signal circuit is open or shorted to ground MAP Sensor is damaged or it has failed May be an intermittent condition PCM has failed 

Trouble Code: P0131

O2 (B1 S1) Short to Ground

Possible Causes:

O2 signal circuit is shorted to chassis or Sensor ground O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed 

Trouble Code: P0132

O2 (B1 S1) Circuit Short to Voltage

Possible Causes:

O2 signal circuit shorted to heater B+ circuit (inspect the connector for oil or moisture inside the terminal area) O2 signal circuit is open PCM has failed 

Trouble Code: P0133

O2 (B1 S1) Slow Response

Possible Causes:

Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is fuel contaminated O2 element is deteriorated or it has failed 

Trouble Code: P0134

O2 (B1 S1) Remains At Center

Possible Causes:

Exhaust leak present in exhaust manifold or exhaust pipes O2 element is fuel contaminated or has deteriorated O2S signal circuit or ground circuit has high resistance PCM has failed 

Trouble Code: P0135

O2 (B1 S1) Heater Circuit

Possible Causes:

ASD relay output (power) circuit to the heater is open O2 heater ground circuit is open O2 heater element is damaged or has high resistance PCM has failed 

Trouble Code: P0137

O2 (B1 S2) Circuit Short to Ground

Possible Causes:

O2 signal tracking in connector due to wet/oil conditions O2 signal circuit is open, or the ground circuit is open O2 heater supply circuit is open PCM has failed