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Home >> Jeep >> 1997 >> Grand Cherokee Laredo, 4.0 S, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 4.0L >> Diagnostic Trouble Code (DTC) Identification

Diagnostic Trouble Code (DTC) Identification

NOTE: Breaks in testing sequence occur when tests do not apply to this model.
DTC MESSAGES & CODES

Test No. SAE Code Scan Tool Message MIL Code
TC-16A  N/A A/C CLUTCH RELAY CIRCUIT 33
TC-10A  N/A AUTO SHUTDOWN RELAY CONTROL CIRCUIT 42
TC-153A  P1492  BATTERY TEMP SENSOR VOLTAGE TOO HIGH 44
TC-153A  P1493  BATTERY TEMP SENSOR VOLTAGE TOO LOW 44
TC-112A  P0420  CATALYST 1/1 EFFICIENCY FAILURE (1)
TC-6A  N/A CHARGING SYSTEM VOLTAGE TOO HIGH 46
TC-5A  N/A CHARGING SYSTEM VOLTAGE TOO LOW 47
TC-128A  P0125  CLOSED LOOP TEMP NOT REACHED 17
TC-107A  P0301  CYLINDER #1 MISFIRE 43
TC-107A  P0302  CYLINDER #2 MISFIRE 43
TC-107A  P0303  CYLINDER #3 MISFIRE 43
TC-107A  P0304  CYLINDER #4 MISFIRE 43
TC-107A  P0305  CYLINDER #5 MISFIRE 43
TC-107A  P0306  CYLINDER #6 MISFIRE 43
TC-107A  P0307  CYLINDER #7 MISFIRE 43
TC-107A  P0308  CYLINDER #8 MISFIRE 43
TC-31A  P0118  ECT SENSOR VOLTAGE TOO HIGH 22
TC-30A  P0117  ECT SENSOR VOLTAGE TOO LOW 22
TC-140A  P0400  EGR SYSTEM FAILURE 68
(2) N/A ENGINE IS COLD TOO LONG 17
TC-161A  P0455  EVAP LEAK MONITOR LARGE LEAK DETECTED 31
TC-187A  P1486  EVAP LEAK MONITOR PINCHED HOSE FOUND 31
TC-160A  P0442  EVAP LEAK MONITOR SMALL LEAK DETECTED 31
TC-113A  P0441  EVAP PURGE FLOW MONITOR FAILURE 31
TC-18A  P0443  EVAP PURGE SOLENOID CIRCUIT 31
TC-151A  N/A FUEL LEVEL SENDING UNIT NO CHANGE OVER MILES 42
TC-150A  N/A FUEL LEVEL SENDING UNIT VOLTS TOO HIGH 42
TC-49A  N/A FUEL LEVEL SENDING UNIT VOLTS TOO LOW 42
TC-101A  N/A FUEL PUMP RELAY CONTROL CIRCUIT 42
TC-119A  P0171  FUEL SYSTEM 1/1 LEAN 51
TC-118A  P0172  FUEL SYSTEM 1/1 RICH 52
TC-11A  N/A GENERATOR FIELD NOT SWITCHING PROPERLY 41
TC-142A  P1757  GOV PRES ABOVE 3 PSI IN GEAR WITH 0 MPH 37
TC-141A  P1756  GOV PRES NOT EQUAL TO TARGET @ 15-20 PSI 37
TC-169A  P1762  GOV PRES SEN OFFSET VOLTS TOO LOW OR HIGH 45
TC-168A  P1763  GOVERNOR PRESSURE SENSOR VOLTS TOO HI 45
TC-167A  P1764  GOVERNOR PRESSURE SENSOR VOLTS TOO LOW 45
TC-171A  P0748  GOVERNOR PRESSURE SOLENOID/TRANS RELAY CKTS 37
TC-25A  P0505  IDLE AIR CONTROL MOTOR CIRCUITS 25
TC-43A  P0351  IGNITION COIL #1 PRIMARY CIRCUIT 43
TC-21A  P0201  INJECTOR #1 CONTROL CIRCUIT 27
TC-21A  P0202  INJECTOR #2 CONTROL CIRCUIT 27
TC-21A  P0203  INJECTOR #3 CONTROL CIRCUIT 27
TC-21A  P0204  INJECTOR #4 CONTROL CIRCUIT 27
TC-21A  P0205  INJECTOR #5 CONTROL CIRCUIT 27
TC-21A  P0206  INJECTOR #6 CONTROL CIRCUIT 27
TC-21A  P0207  INJECTOR #7 CONTROL CIRCUIT 27
TC-21A  P0208  INJECTOR #8 CONTROL CIRCUIT 27
TC-58A  P0113  INTAKE AIR TEMP SENSOR VOLTAGE HIGH 23
TC-57A  P0112  INTAKE AIR TEMP SENSOR VOLTAGE LOW 23
TC-157A  P1391  INTERMITTENT LOSS OF CMP OR CKP 11
(3) (3)
P0601		 INTERNAL CONTROLLER FAILURE 53
TC-183A  P1495  LEAK DETECTION PUMP SOLENOID CIRCUIT 31
TC-184A  P1494  LEAK DETECT PUMP SW OR MECHANICAL FAULT 31
TC-166A  P0720  LOW OUTPUT SPD SENSOR RPM, ABOVE 15 MPH 15
TC-37A  P0108  MAP SENSOR VOLTAGE TOO HIGH (4) 14
TC-36A  P0107  MAP SENSOR VOLTAGE TOO LOW (4) 14
TC-186A  P1398  MISFIRE ADAPTIVE NUMERATOR AT LIMIT 11
TC-106A  P0300  MULTIPLE CYLINDER MISFIRE (4) 43
TC-44A  P1389  NO ASD RELAY OUTPUT VOLTAGE AT PCM 42
TC-1A  P0340  NO CAM SIGNAL AT PCM 54
TC-39A  P1297  NO CHANGE IN MAP FROM START TO RUN 13
TC-40A  P0320  NO CRANK REFERENCE SIGNAL AT PCM 11
TC-35A  P0500  NO VEHICLE SPEED SENSOR SIGNAL 15
TC-36A  P1296  NO 5 VOLTS TO MAP SENSOR 14
TC-188A  N/A O/D SWITCH PRESSED (LO) MORE THAN 5 MINUTES 45
TC-49A  P1696  PCM FAILURE EEPROM WRITE DENIED 63
(3) (3) PCM FAILURE SPI COMMUNICATIONS 53
TC-48A  P1697  PCM FAILURE SRI MILE NOT STORED 62
TC-114A  P1899  PNP SWITCH STUCK IN PARK OR IN GEAR 45
TC-82A  N/A SPEED CONTROL POWER RELAY OR 12-VOLT DRIVER CIRCUIT 77
TC-15A  N/A SPEED CONTROL SOLENOID CIRCUITS 34
TC-87A  N/A SPEED CONTROL SWITCH ALWAYS LOW 34
TC-138A  P1294  TARGET IDLE NOT REACHED 25
TC-27A  P0123  THROTTLE POSITION SENSOR VOLTAGE HIGH (4) 24
TC-26A  P0122  THROTTLE POSITION SENSOR VOLTAGE LOW (4) 24
TC-148A  P0740  TORQ CONV CLU, NO RPM DROP AT LOCKUP 37
TC-12A  P0743  TORQUE CONVERTER CLUTCH SOLENOID/TRANS RELAY CKT 37
TC-132A  P0121  TPS VOLTAGE DOES NOT AGREE WITH MAP 24
TC-164A  P0711  TRANS TEMP SENSOR, NO TEMP RISE AFTER START 45
TC-75A  P0713  TRANS TEMP SENSOR VOLTAGE TOO HIGH 45
TC-74A  P0712  TRANS TEMP SENSOR VOLTAGE TOO LOW 45
TC-50A  P0753  TRANS 3-4 SOLENOID/TRANS RELAY CKTS 37
TC-173A  P1765  TRANS 12 VOLT SUPPLY RELAY CNTRL CIRCUIT 37
TC-103A  P0135  1/1 O2 SENSOR HEATER FAILURE 21
TC-155A  P0131  1/1 O2 SENSOR VOLTAGE SHORTED TO GROUND 21
TC-192A  P0133  1/1 O2 SENSOR SLOW DURING CATALYST MONITOR 21
TC-102A  P0133  1/1 O2 SENSOR SLOW RESPONSE 21
TC-62A  P0132  1/1 O2 SENSOR SHORTED TO VOLTAGE 21
TC-105A  P0141  1/2 O2 SENSOR HEATER FAILURE 21
TC-126A  P0138  1/2 O2 SENSOR SHORTED TO VOLTAGE 21
TC-104A  P0139  1/2 O2 SENSOR SLOW RESPONSE 21
TC-156A  P0137  1/2 O2 SENSOR VOLTS SHORTED TO GND 21
TC-159A (5) (5) 1/3 O2 SENSOR SLOW RESPONSE 21
TC-181A  P0151  2/1 O2 SENSOR SHORTED TO GROUND 21
TC-165A  P0783  3-4 SHIFT SOL, NO RPM DROP @ 3-4 SHIFT 45
(1) MIL Code 64 or 72.
(2) Check cooling system and thermostat if engine coolant temperature does not reach 176°F (80°C) after driving 20 minutes.
(3) Replace Powertrain Control Module (PCM) and perform TEST VER-2A.
(4) This DTC can be set by low fuel level. Ensure fuel tank is at least1/4 full and retest for DTC.
(5) Information is not available from manufacturer.
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