LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jeep >> 1996 >> Cherokee Classic, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 4.0L >> Diagnostic Trouble Code (DTC) Identification >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Trouble Code (DTC) Identification: Notes

NOTE: Some DTCs have more than one meaning. Malfunction Indicator Light (MIL) is unable to distinguish between different failures. As an example, there are 4 different failures possible for Oxygen Sensor (O2S) system, MIL can only identify an O2S failure by flashing a DTC 21. MIL is capable of displaying all possible system failures.
NOTE: A scan tool may NOT be able to identify all possible DTCs. As an example, a scan tool may not be able to identify or display a DTC for a malfunctioning A/C clutch relay circuit, auto shutdown relay circuit or charging system voltage circuit.
DTC MESSAGES & CODES

SAE Code MIL Code Scan Tool Message Test No.
P0107  14 MAP SENSOR VOLTAGE TOO LOW (4) TEST TC-36A 
P0108  14 MAP SENSOR VOLTAGE TOO HIGH (4) TEST TC-37A 
P0112  23 INTAKE AIR TEMP SENSOR VOLTAGE LOW TEST TC-57A 
P0113  23 INTAKE AIR TEMP SENSOR VOLTAGE HIGH TEST TC-58A 
P0117  22 ECT SENSOR VOLTAGE TOO LOW TEST TC-30A 
P0118  22 ECT SENSOR VOLTAGE TOO HIGH TEST TC-31A 
P0121  24 TPS VOLTAGE DOES NOT AGREE WITH MAP TEST TC-132A 
P0122  24 THROTTLE POSITION SENSOR VOLTAGE LOW (4) TEST TC-26A 
P0123  24 THROTTLE POSITION SENSOR VOLTAGE HIGH (4) TEST TC-27A 
P0125  17 CLOSED LOOP TEMP NOT REACHED TEST TC-128A 
P0131  21 UPSTREAM O2S VOLTAGE SHORTED TO GROUND TEST TC-155A 
P0132  21 UPSTREAM O2 SENSOR SHORTED TO VOLTAGE TEST TC-62A 
P0133  21 UPSTREAM O2 SENSOR SLOW RESPONSE TEST TC-102A 
P0135  21 UPSTREAM O2 SENSOR HEATER FAILURE TEST TC-103A 
P0137  21 PRE-CAT/DOWNSTREAM O2S VOLTS SHORTED TO GND TEST TC-156A 
P0139  21 PRE-CAT/DOWNSTREAM O2S SHORTED TO VOLTAGE TEST TC-126A 
P0141  21 PRE-CAT/DOWNSTREAM O2S HEATER FAILURE TEST TC-105A 
P0144  21 POST-CATALYST O2 SENOR SHORTED TO VOLTAGE TEST TC-147A 
P0147  21 POST-CATALYST O2 SENSOR HEATER FAILURE TEST TC-189A 
P0151  21 RIGHT BANK UPSTRM O2S SHORTED TO GROUND TEST TC-181A 
P0152  21 RIGHT O2S SENSOR SHORTED TO VOLTAGE TEST TC-66A 
P0153  21 RIGHT UPSTREAM O2 SENSOR SLOW RESPONSE TEST TC-122A 
P0155  21 RIGHT UPSTREAM O2 SENSOR HEATER FAILURE TEST TC-124A 
P0171  51 FUEL SYSTEM LEAN TEST TC-119A 
P0172  52 FUEL SYSTEM RICH TEST TC-118A 
P0174  51 RIGHT BANK FUEL SYSTEM LEAN TEST TC-121A 
P0175  52 RIGHT BANK FUEL SYSTEM RICH TEST TC-120A 
P0201  27 INJECTOR #1 CONTROL CIRCUIT TEST TC-21A 
P0202  27 INJECTOR #2 CONTROL CIRCUIT TEST TC-21A 
P0203  27 INJECTOR #3 CONTROL CIRCUIT TEST TC-21A 
P0204  27 INJECTOR #4 CONTROL CIRCUIT TEST TC-21A 
P0205  27 INJECTOR #5 CONTROL CIRCUIT TEST TC-21A 
P0206  27 INJECTOR #6 CONTROL CIRCUIT TEST TC-21A 
P0207  27 INJECTOR #7 CONTROL CIRCUIT TEST TC-21A 
P0208  27 INJECTOR #8 CONTROL CIRCUIT TEST TC-21A 
P0209  27 INJECTOR #9 CONTROL CIRCUIT TEST TC-21A 
P0210  27 INJECTOR #10 CONTROL CIRCUIT TEST TC-21A 
P0300  43 MULTIPLE CYLINDER MISFIRE TEST TC-106A 
P0301  43 CYLINDER #1 MISFIRE TEST TC-107A 
P0302  43 CYLINDER #2 MISFIRE TEST TC-107A 
P0303  43 CYLINDER #3 MISFIRE TEST TC-107A 
P0304  43 CYLINDER #4 MISFIRE TEST TC-107A 
P0305  43 CYLINDER #5 MISFIRE TEST TC-107A 
P0306  43 CYLINDER #6 MISFIRE TEST TC-107A 
P0307  43 CYLINDER #7 MISFIRE TEST TC-107A 
P0308  43 CYLINDER #8 MISFIRE TEST TC-107A 
P0309  43 CYLINDER #9 MISFIRE TEST TC-107A 
P0310  43 CYLINDER #10 MISFIRE TEST TC-107A 
P0320  11 NO CRANK REFERENCE SIGNAL AT PCM TEST TC-40A 
P0340  54 NO CAM SIGNAL AT PCM TEST TC-1A 
P0401  32 EGR SYSTEM FAILURE TEST TC-46A 
P0403  32 EGR SOLENOID CIRCUIT TEST TC-17A 
P0420  (1) CATALYTIC CONVERTER EFFICIENCY FAILURE TEST TC-112A 
P0441  31 EVAP PURGE FLOW MONITOR FAILURE TEST TC-113A 
P0442  31 EVAP LEAK MONITOR (SMALL LEAK DETECTED) TEST TC-160A 
P0443  31 EVAP PURGE SOLENOID CIRCUIT TEST TC-18A 
P0455  31 EVAP LEAK MONITOR (LARGE LEAK DETECTED) TEST TC-161A 
P0500  15 NO VEHICLE SPEED SENSOR SIGNAL TEST TC-35A 
P0505  25 IDLE AIR CONTROL MOTOR CIRCUITS TEST TC-25A 
P0551  65 POWER STEERING SWITCH FAILURE TEST TC-115A 
(3) 53 PCM FAILURE SPI COMMUNICATIONS (3)
(3) 53 INTERNAL CONTROLLER FAILURE (3)
P0711  37 TRANS TEMP SENSOR, NO TEMP RISE AFTER START TEST TC-164A 
P0712  37 TRANS TEMP SENSOR VOLTAGE TOO LOW TEST TC-74A 
P0713  37 TRANS TEMP SENSOR VOLTAGE TOO HIGH TEST TC-75A 
P0720  15 LOW OUTPUT SPD SENSOR RPM, ABOVE 15 MPH TEST TC-166A 
P0740  37 TORQ CONV CLU, NO RPM DROP AT LOCKUP TEST TC-148A 
P0743  37 TORQUE CONVERTER CLUTCH SOLENOID/TRANS RELAY CIRCUIT TEST TC-12A 
P0748  45 GOVERNOR PRESSURE SOLENOID/TRANS RELAY CKTS TEST TC-171A 
P0783  45 3-4 SHIFT SOL, NO RPM DROP @ 3-4 SHIFT TEST TC-165A 
P1294  25 TARGET IDLE NOT REACHED TEST TC-138A 
P1296  14 NO 5 VOLTS TO MAP SENSOR TEST TC-36A 
P1297  13 NO CHANGE IN MAP FROM START TO RUN TEST TC-39A 
P1391  11 INTERMITTENT LOSS OF CMP OR CKP TEST TC-157A 
P1398  11 MISFIRE ADAPTIVE NUMERATOR AT LIMIT TEST TC-186A 
P1486  31 EVAP LEAK MONITOR (PINCHED HOSE FOUND) TEST TC-187A 
P1491  35 RAD FAN CONTROL RELAY CIRCUIT TEST TC-14A 
P1492  44 BATTERY TEMP SENSOR VOLTAGE TOO HIGH TEST TC-153A 
P1493  44 BATTERY TEMP SENSOR VOLTAGE TOO LOW TEST TC-153A 
P1494  31 LEAK DETECT PUMP SW OR MECHANICAL FAULT TEST TC-184A 
P1495  31 LEAK DETECTION PUMP SOLENOID CIRCUIT TEST TC-183A 
P1498  71 AUXILIARY 5 VOLT SUPPLY OUTPUT TOO LOW TEST TC-185A 
P1697  62 PCM FAILURE SRI MILE NOT STORED TEST TC-48A 
P1698  63 PCM FAILURE EEPROM WRITE DENIED TEST TC-49A 
P1756  45 GOV PRES NOT EQUAL TO TARGET @ 15-20 PSI TEST TC-141A 
P1757  45 GOV PRES ABOVE 3 PSI IN GEAR WITH 0 MPH TEST TC-142A 
P1762  45 GOV PRES SEN OFFSET VOLTS TOO LOW OR HIGH TEST TC-169A 
P1763  45 GOVERNOR PRESSURE SENSOR VOLTS TOO HI TEST TC-168A 
P1754  45 GOVERNOR PRESSURE SENSOR VOLTS TOO LOW TEST TC-167A 
P1765  45 TRANS 12 VOLT SUPPLY RELAY CNTRL CIRCUIT TEST TC-173A 
P1899  37 P/N SWITCH STUCK IN PARK OR IN GEAR TEST TC-114A 
N/A 11 NO CRANK REFERENCE SIGNAL AT PCM TEST TC-40A 
N/A 17 ENGINE IS COLD TOO LONG (2)
N/A 33 A/C CLUTCH RELAY CIRCUIT TEST TC-16A 
N/A 34 SPEED CONTROL SOLENOID CIRCUITS TEST TC-15A 
N/A 34 SPEED CONTROL SWITCH ALWAYS LOW TEST TC-87A 
N/A 41 GENERATOR FIELD NOT SWITCHING PROPERLY TEST TC-11A 
N/A 42 AUTO SHUTDOWN RELAY CONTROL CIRCUIT TEST TC-10A 
N/A 42 FUEL LEVEL SENDING UNIT VOLTS TOO HIGH TEST TC-150A 
N/A 42 FUEL LEVEL SENDING UNIT VOLTS TOO LOW TEST TC-149A 
N/A 42 FUEL LEVEL SENDING UNIT NO CHANGE OVER MILES TEST TC-151A 
N/A 42 FUEL PUMP RELAY CONTROL CIRCUIT TEST TC-101A 
N/A 42 NO ASD RELAY OUTPUT VOLTAGE AT PCM TEST TC-44A 
N/A 45 O/D SWITCH LOW RATIONALITY TEST TC-188A 
N/A 46 CHARGING SYSTEM VOLTAGE TOO HIGH TEST TC-6A 
N/A 47 CHARGING SYSTEM VOLTAGE TOO LOW TEST TC-5A 
N/A 77 SPEED CONTROL POWER RELAY CIRCUIT TEST TC-15A 
(1) MIL Code 64 or 72.
(2) Check cooling system and thermostat if engine coolant temp does not reach 176°F (80°C) after driving 20 minutes.
(3) Replace Powertrain Control Module (PCM). Perform TEST VER-2A.
(4) This DTC can be set by low fuel level. Ensure fuel tank is at least 1/4 full and retest for DTC.
scientia non olet · About LEMON Manuals