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Fault Code Table

FAULT CODE

Code Display On DRB-II (1) Fault Condition
11 IGN REFERENCE SIGNAL No Distributor Reference Signal Detected During Cranking
13(2)(3) SLOW CHANGE IN MAP SIGNAL No Difference In MAP Sensor Signal Is Detected
13 NO CHANGE IN MAP FROM START TO RUN No Difference Detected Between MAP & Barometric Pressure Readings
14(2)(3) MAP VOLTAGE TOO LOW MAP Sensor Input Below Minimum Acceptable Voltage
14 MAP VOLTAGE TOO HIGH MAP Sensor Input Above Maximum Acceptable Voltage
15(3) NO VEHICLE SPEED SIGNAL No Distance Sensor Signal Detected With Road Load Conditions
17 ENGINE IS COLD TOO LONG Coolant Temp. Stays Below Normal Operating Temp. During Vehicle Operation
21(3) O2 SIGNAL STAYS AT CENTER Neither Rich Nor Lean Condition Is Detected From Oxygen Sensor Input
21 O2 SENSOR SHORTED TO VOLTAGE O2 Sensor Input Voltage Maintained Above Normal Operating Range
22(2)(3) COOLANT SENSOR VOLTAGE TOO LOW Coolant Temp. Sensor Input Below Minimum Acceptable Voltage
22 COOLANT SENSOR VOLTAGE TOO HIGH Coolant Temp. Sensor Input Above Maximum Acceptable Voltage
23(2)(3) CHARGE TEMP SENSOR VOLTAGE LOW Charge Temp. Sensor Input Below Minimum Acceptable Voltage
23 CHARGE TEMP SENSOR VOLTAGE HIGH Charge Temp. Sensor Input Above Maximum Acceptable Voltage
24(2)(3) TPS VOLTAGE LOW TPS Sensor Output Less Than Minimum Acceptable Voltage
24 TPS VOLTAGE HIGH TPS Sensor Output More Than Maximum Acceptable Voltage
25(3) AUTOMATIC IDLE SPEED MOTOR CIRCUITS Short/Open Circuit Detected In One Or More Automatic Idle Speed (AIS) Motor Circuits
27(2)(3) INJECTOR (#) CONTROL CIRCUIT Injector (Number) Output Driver Does Not Respond Correctly To SBEC Control Signal
33 A/C CLUTCH RELAY CIRCUIT Open/Short Condition Detected In A/C Clutch Relay Circuit
34(4) SPEED CONTROL SOLENOID CIRCUITS Open/Short Condition Detected In Speed (Cruise) Control Vacuum Or Vent Solenoid Circuits
35(4) RADIATOR FAN RELAY Open Or Shorted Condition Detected In Radiator Fan Relay Circuit
41(2)(3) ALTERNATOR FIELD NOT SWITCHING PROPERLY Open/Short Condition Detected In Alternator Field Circuit
42 ASD RELAY CIRCUIT Open/Short Condition Detected In ASD Relay Circuit
42 NO ASD RELAY VOLTAGE SENSED AT CONTROLLER No ASD Relay Voltage Sensed At SBEC Controller
44 BATTERY TEMP SENSOR VOLTAGE OUT OF LIMITS Battery Temp. Sensor Voltage Out Of Limit
46(2)(3) CHARGING SYSTEM VOLTAGE TOO HIGH Charging System Voltage Too High
47(2)(3) CHARGING SYSTEM VOLTAGE TOO LOW Charging System Voltage Too Low
51(3) O2 SIGNAL STAYS BELOW CENTER (LEAN) O2 Sensor Signal Stays Lean
52(3) O2 SIGNAL STAYS ABOVE CENTER (RICH) O2 Sensor Signal Stays Rich
53 INTERNAL CONTROLLER FAILURE Internal Engine Controller Fault Condition Detected
53 CONTROLLER FAILURE SPI COMMUNICATIONS No Internal Communication Between Co-Processors
54 NO SYNC PICK-UP SIGNAL No Synchronization Pick-Up Signal
55 NO DISPLAY (BLANK) Completion Of Fault Code Display By CHECK ENGINE Light
62 CONTROLLER FAILURE (EMR MILES NOT STORED) Engine Controller Failure, EMR Miles Not Stored
63 CONTROLLER FAILURE EEPROM WRITE DENIED Engine Controller Failure, EEPROM Write Denied
76(4) FUEL PUMP RESISTOR BYPASS RELAY CIRCUIT Open/Short Detected In The Ballast Resistor By-Pass Circuit
(1) Actual message displayed on DRB-II.
(2) CHECK ENGINE light on.
(3) CHECK ENGINE light on (California only).
(4) Comanche and Cherokee only.
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