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Checking System For Diagnostic Trouble Codes

NOTE: Ensure battery is fully charged before proceeding with test.
  1. Attempt to start engine. Crank engine for up to 10 seconds (if necessary).
  2. Connect scan tool to Data Link Connector (DLC). For Data Link Connector (DLC) location, see RETRIEVING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM in SELF-DIAGNOSTICS section in this article.
  3. Using scan tool manufacturer's instructions, read DTC message (DRB scan tool) or DTC code (generic scan tool). On any scan tool, if scan tool displays NO RESPONSE, perform TEST NS-6A - REPAIRING A NO RESPONSE CONDITION . If scan tool will not power up, check for loose cable connections or bad cable. If cable connections and cable are okay, check voltage at cavity No. 16 (Pink wire) on DLC. Voltage should be at least 11 volts. If voltage is not as specified, check wiring circuit and necessary fuses. See appropriate wiring diagram in WIRING DIAGRAMS article.
  4. If scan tool displays an error message, (i.e., USER-REQUESTED COLD BOOT or USER-REQUESTED WARM BOOT), follow scan tool manufacturer's instructions. If scan tool displays a BUS failure (i.e., SHORT TO BATTERY), this indicates either a scan tool failure or BUS failure. To diagnose and correct BUS failures, see appropriate BODY CONTROL COMPUTER - VEHICLE COMMUNICATIONS article in ACCESSORIES & EQUIPMENT section.
  5. On all applications, if DTCs are displayed, see DTC MESSAGES & CODES  table and perform appropriate test(s). If no DTCs are displayed, refer to one of the following:
    • For Driveability problems, perform TEST NTC-1A .
    • For No-Start problems, perform TEST NS-SEL - NO START TEST SELECTION MENU .
    • For speed control problems, perform TEST SC-1A in CRUISE CONTROL SYSTEMS article in ACCESSORIES & EQUIPMENT section.
    • For charging system problems, perform TEST CH-1A in GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS section.
NOTE: If using Chrysler's Diagnostic Readout Box (DRB-III) scan tool, scan tool has ability to identify or display all Diagnostic Trouble Codes (DTCs) for system diagnosis. When using generic scan tool, not all DTCs may be retrieved using generic scan tool. Generic scan tool is not able to identify all possible DTCs. For example, generic scan tool may not be able to identify or display a DTC for a malfunctioning A/C clutch relay circuit or A/C pressure sensor. See DTC MESSAGES & CODES  table.
DTC MESSAGES & CODES

DRB Scan Tool Message Generic Scan Tool Test No.
5-VOLT SUPPLY OUTPUT TOO LOW P1496 TC-146A 
A/C CLUTCH RELAY CIRCUIT N/A TC-16A 
A/C PRESSURE SENSOR VOLTS TOO HIGH N/A TC-90A 
A/C PRESSURE SENSOR VOLTS TOO LOW N/A TC-91A 
AUTO SHUTDOWN RELAY CONTROL CIRCUIT N/A TC-10A 
BAROMETRIC PRESSURE OUT OF RANGE P0106 TC-60A 
BATTERY TEMP SENSOR VOLTAGE TOO HIGH P1492 TC-153A 
BATTERY TEMP SENSOR VOLTAGE TOO LOW P1493 TC-153A 
BRAKE SWITCH STUCK PRESSED OR RELEASED P0703 TC-152A 
CATALYTIC CONVERTER EFFICIENCY FAILURE P0420 TC-112A 
CHARGING SYSTEM VOLTAGE TOO HIGH N/A TC-6A 
CHARGING SYSTEM VOLTAGE TOO LOW N/A TC-5A 
CLOSED LOOP TEMPERATURE NOT REACHED P0125 TC-128A 
CYLINDER #1 MISFIRE P0301 TC-107A 
CYLINDER #2 MISFIRE P0302 TC-107A 
CYLINDER #3 MISFIRE P0303 TC-107A 
CYLINDER #4 MISFIRE P0304 TC-107A 
DOWNSTREAM O2 SENSOR HEATER FAILURE P0141 TC-105A 
DOWNSTREAM O2 SENSOR SHORTED TO VOLTAGE P0138 TC-126A 
DOWNSTREAM O2 SENSOR STAYS AT CENTER P0140 TC-129A 
DOWNSTREAM O2 SENSOR SHORTED TO GROUND P0137 TC-156A 
EATX CONTROLLER DTC PRESENT P0700 (1)
ECT SENSOR VOLTAGE TOO HIGH P0118 TC-31A 
ECT SENSOR VOLTAGE TOO LOW P0117 TC-30A 
ENGINE IS COLD TOO LONG N/A (2)
EVAP PURGE FLOW MONITOR FAILURE P0441 TC-113A 
EVAP PURGE SOLENOID CIRCUIT P0443 TC-18A 
EVAP LEAK MONITOR LARGE LEAK DETECTED P0455 TC-161A 
EVAP LEAK MONITOR PINCHED HOSE P1486 TC-187A 
EVAP LEAK MONITOR SMALL LEAK DETECTED P0442 TC-160A 
FUEL LEVEL SENDING UNIT VOLTS TOO HIGH N/A (3)
FUEL LEVEL SENDING UNIT VOLTS TOO LOW N/A (3)
FUEL LEVEL SENDING UNIT NO CHANGE OVER MILES N/A (3)
FUEL PUMP RELAY CONTROL CIRCUIT N/A TC-101A 
FUEL SYSTEM LEAN P0171 TC-119A 
FUEL SYSTEM RICH P0172 TC-118A 
GENERATOR FIELD NOT SWITCHING PROPERLY N/A TC-11A 
IDLE AIR CONTROL MOTOR CIRCUITS P0505 TC-25A 
IGNITION COIL #1 PRIMARY CIRCUIT P0351 TC-43A 
IGNITION COIL #2 PRIMARY CIRCUIT P0352 TC-42A 
INJECTOR #1 CONTROL CIRCUIT P0201 TC-21A 
INJECTOR #2 CONTROL CIRCUIT P0202 TC-21A 
INJECTOR #3 CONTROL CIRCUIT P0203 TC-21A 
INJECTOR #4 CONTROL CIRCUIT P0204 TC-21A 
INTAKE AIR TEMP SENSOR VOLTAGE HIGH P0113 TC-58A 
INTAKE AIR TEMP SENSOR VOLTAGE LOW P0112 TC-57A 
INTERMITTENT LOSS OF CMP OR CKP P1391 TC-57A 
INTERNAL CONTROLLER FAILURE P0601 (4)
KNOCK SENSOR CIRCUIT N/A TC-59A 
LEAK DETECTION PUMP PRESSURE SWITCH P1494 TC-184A 
LEAK DETECTION PUMP SOLENOID CIRCUIT P1495 TC-183A 
MAP SENSOR VOLTAGE TOO HIGH P0108 TC-37A 
MAP SENSOR VOLTAGE TOO LOW P0107 TC-36A 
MIS-FIRE ADAPTIVE NUMERATOR AT LIMIT P1398 TC-186A 
MULTIPLE CYLINDER MISFIRE P0300 TC-106A 
NO ASD RELAY OUTPUT VOLTAGE AT PCM N/A TC-44A 
NO CAM SIGNAL AT PCM P0340 TC-1A 
NO CCD MESSAGE FROM BODY CONTROL MODULE P1695 TC-97A 
NO CCD MESSAGES FROM TCM P1698 TC-96A 
NO CHANGE IN MAP FROM START TO RUN P1297 TC-39A 
NO CRANK REFERENCE SIGNAL AT PCM N/A TC-40A 
NO VEHICLE SPEED SENSOR SIGNAL P0500 TC-35A 
PARK/NEUTRAL SWITCH FAILURE P1899 TC-114A 
PCM FAILURE EEPROM WRITE DENIED P1696 TC-48A 
PCM FAILURE SPI COMMUNICATIONS P0600 (4)
PCM FAILURE SRI MILE NOT STORED P1697 TC-48A 
RAD FAN CONTROL RELAY CIRCUIT P1491 TC-14A 
SLOW UPSTREAM O2 DURING CATALYST MONITOR P0133 TC-192A 
SPD CTRL PWR RLY OR S/C 12V DRIVER N/A TC-15A 
SPEED CONTROL SOLENOID CIRCUITS N/A TC-15A 
TARGET IDLE NOT REACHED P1294 TC-138A 
THROTTLE POSITION SENSOR VOLTAGE HIGH P0123 TC-27A 
THROTTLE POSITION SENSOR VOLTAGE LOW P0122 TC-26A 
TORQ CONV CLU, NO RPM DROP AT LOCKUP (5) P0740 TC-148A 
TORQUE CONVERTER CLUTCH SOLENOID CKT (5) P0743 TC-12A 
TPS VOLTAGE DOES NOT AGREE WITH MAP P0121 TC-132A 
UPSTREAM O2 SENSOR HEATER FAILURE P0135 TC-103A 
UPSTREAM O2 SENSOR SHORTED TO VOLTAGE P0132 TC-62A 
UPSTREAM O2 SENSOR SLOW RESPONSE P0133 TC-102A 
UPSTREAM O2 SENSOR STAYS AT CENTER P0134 TC-32A 
UPSTREAM O2 SENSOR SHORTED TO GROUND P0131 TC-155A 
(1) Refer to appropriate AUTOMATIC TRANSMISSIONS article in TRANSMISSION SERVICE & REPAIR section for diagnosis of electronic controlled transaxle.
(2) Check cooling system and thermostat if engine coolant temperature does not reach 176°F (80°C) after driving 20 minutes.
(3) See appropriate BODY CONTROL COMPUTER TESTS article in ACCESSORIES & EQUIPMENT in section for fuel level sending unit testing.
(4) Replace Powertrain Control Module (PCM). Perform TEST VER-2A .
(5) Applies only to 3-speed automatic transaxle.
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