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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). Diagnostic Trouble Codes (DTCs) are retrieved using a scan tool.
  2. Connect scan tool to Data Link Connector (DLC). For Data Link Connector (DLC) location, see RETRIEVING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. Using scan tool manufacturer's instructions, read DTC message and code.
  3. If scan tool displays NO RESPONSE, go to TEST NS-6A . 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 on 16-pin 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 any other error message is displayed, contact scan tool manufacturer for further instructions.
  5. 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 .
    • For Speed (Cruise) Control problems, perform TEST SC-1A. See appropriate CRUISE CONTROL SYSTEMS article in ACCESSORIES & EQUIPMENT.
    • For Charging system problems, perform TEST CH-1A. See GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.
NOTE: Testing procedures are specific for Diagnostic Readout Box (DRB) scan tool.
DTC MESSAGES & CODES

Scan Tool Message Scan Tool Code 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 
AMBIENT/BATT TEMP SENSOR VOLTS TOO HIGH P1492 TC-153A 
AMBIENT/BATT TEMP SENSOR VOLTS TOO LOW P1493 TC-153A 
AUTO SHUTDOWN RELAY CONTROL CIRCUIT N/A TC-10A 
BAROMETRIC PRESSURE OUT OF RANGE P0106 TC-60A 
BRAKE SWITCH STUCK PRESSED OR RELEASED P0703 TC-152A 
CATALYST 1/1 EFFICIENCY FAILURE P0420 TC-112A 
CATALYST 2/1 EFFICIENCY FAILURE P0432 TC-180A 
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 
CYLINDER #5 MISFIRE P0305 TC-107A 
CYLINDER #6 MISFIRE P0306 TC-107A 
EATX CONTROLLER DTC PRESENT P0700 (1)
ECT SENSOR VOLTAGE TOO HIGH P0118 TC-31A 
ECT SENSOR VOLTAGE TOO LOW P0117 TC-30A 
EGR SOLENOID CIRCUIT P0403 TC-17A 
EGR SYSTEM FAILURE P0401 TC-46A 
ENGINE IS COLD TOO LONG N/A (2)
EVAP LEAK MONITOR LARGE LEAK DETECTED P0455 TC-161A 
EVAP LEAK MONITOR PINCHED HOSE FOUND P1486 TC-187A 
EVAP LEAK MONITOR SMALL LEAK DETECTED P0442 TC-160A 
EVAP PURGE FLOW MONITOR FAILURE P0441 TC-113A 
EVAP PURGE SOLENOID CIRCUIT P0443 TC-18A 
FRONT BANK FUEL SYSTEM LEAN P0174 TC-121A 
FRONT BANK FUEL SYSTEM RICH P0175 TC-120A 
FUEL LEVEL SENDING UNIT VOLTS TOO HIGH N/A (3)
FUEL LEVEL SENDING UNIT VOLTS TOO LOW N/A (4)
FUEL LEVEL SENDING UNIT NO CHANGE OVER MILES N/A (5)
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 
HI SPEED RAD FAN CTRL RELAY CIRCUIT P1487 TC-139A 
HIGH SPEED CONDENSER FAN CTRL RELAY CIRCUIT P1489 TC-93A 
HIGH SPEED FAN CTRL RELAY CIRCUIT P1489 TC-93A 
HIGH SPEED RAD FAN GROUND CTRL RLY CKT P1498 TC-197A 
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 
INJECTOR #5 CONTROL CIRCUIT P0205 TC-21A 
INJECTOR #6 CONTROL CIRCUIT P0206 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-157A 
INTERNAL CONTROLLER FAILURE P0601 (6)
KNOCK SENSOR CIRCUIT N/A TC-59A 
LEAK DETECTION PUMP SW OR MECHANICAL FAULT P1494 TC-184A 
LEAK DETECTION PUMP SOLENOID CIRCUIT P1495 TC-183A 
LOW SPEED FAN CTRL RELAY CIRCUIT P1490 TC-92A 
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 (7)
NO CCD MESSAGES FROM TCM P1698 (7)
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 
O2 SENSOR 1/1 STAYS AT CENTER P0134 TC-32A 
O2 SENSOR 1/1 HEATER FAILURE P0135 TC-103A 
O2 SENSOR 1/1 SHORTED TO VOLTAGE P0132 TC-62A 
O2 SENSOR 1/1 SLOW RESPONSE P0133 TC-102A 
O2 SENSOR 1/1 VOLTAGE SHORTED TO GROUND P0131 TC-155A 
O2 SENSOR 1/2 HEATER FAILURE P0141 TC-105A 
O2 SENSOR 1/2 SHORTED TO VOLTAGE P0138 TC-126A 
O2 SENSOR 1/2 STAYS AT CENTER P0140 TC-129A 
O2 SENSOR 1/2 VOLTS SHORTED TO GROUND P0137 TC-156A 
O2 SENSOR 2/1 HEATER FAILURE P0155 TC-124A 
O2 SENSOR 2/1 SHORTED TO GROUND P0151 TC-181A 
O2 SENSOR 2/1 SHORTED TO VOLTAGE P0152 TC-66A 
O2 SENSOR 2/1 SLOW RESPONSE P0153 TC-122A 
O2 SENSOR 2/1 STAYS AT CENTER P0154 TC-65A 
O2 SENSOR 2/2 HEATER FAILURE P0161 TC-125A 
O2 SENSOR 2/2 SHORTED TO GROUND P0157 TC-182A 
O2 SENSOR 2/2 SHORTED TO VOLTAGE P0158 TC-127A 
O2 SENSOR 2/2 STAYS AT CENTER P0160 TC-130A 
P/N SWITCH STUCK IN PARK OR IN GEAR P1899 TC-114A 
PCM FAILURE EEPROM WRITE DENIED P1696 TC-48A 
PCM FAILURE SPI COMMUNICATIONS P0600 (6)
PCM FAILURE SRI MILE NOT STORED P1697 TC-48A 
POWER STEERING SWITCH FAILURE P0551 TC-115A 
RADIATOR FAN CONTROL RELAY CIRCUIT P1491 TC-14A 
REAR BANK FUEL SYSTEM LEAN P0171 TC-119A 
REAR BANK FUEL SYSTEM RICH P0172 TC-118A 
SLOW UPSTREAM O2S 1/1 DURING CATALYST MON P0133 TC-192A 
SLOW UPSTREAM O2S 2/1 DURING CATALYST MON P0153 TC-193A 
SPEED CONTROL POWER RELAY CIRCUIT N/A TC-15A 
S/C 12V DRIVER CIRCUIT N/A TC-15A 
SPEED CONTROL SOLENOID CIRCUITS N/A TC-15A 
SPEED CONTROL SWITCH ALWAYS HIGH N/A TC-86A 
SPEED CONTROL SWITCH ALWAYS LOW N/A TC-87A 
TARGET IDLE NOT REACHED P1294 TC-138A 
THROTTLE POSITION SENSOR VOLTAGE HIGH P0123 TC-27A 
THROTTLE POSITION SENSOR VOLTAGE LOW P0122 TC-26A 
TIMING BELT SKIPPED 1 TOOTH OR MORE P1390 TC-133A 
TORQ CONV CLU, NO RPM DROP AT LOCKUP P0740 TC-148A 
TORQUE CONVERTER CLUTCH SOLENOID/TRANS RELAY CKTS P0743 TC-12A 
TPS VOLTAGE DOES NOT AGREE WITH MAP P0121 TC-132A 
VACUUM LEAK FOUND IAC FULLY SEATED) P1299 TC-145A 
(1) Refer to appropriate lemon-25® manual 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) On Breeze, Cirrus, Stratus and Sebring Convertible, refer to appropriate BODY CONTROL COMPUTER TESTS article in ACCESSORIES & EQUIPMENT in appropriate lemon-25® manual for fuel level sending unit testing. On all other models, go to TEST TC-150A.
(4) On Breeze, Cirrus, Stratus and Sebring Convertible, refer to appropriate BODY CONTROL COMPUTER TESTS article in ACCESSORIES & EQUIPMENT in appropriate lemon-25® manual for fuel level sending unit testing. On all other models, go to TEST TC-149A.
(5) On Breeze, Cirrus, Stratus and Sebring Convertible, refer to appropriate BODY CONTROL COMPUTER TESTS article in ACCESSORIES & EQUIPMENT in appropriate lemon-25® manual for fuel level sending unit testing. On all other models, go to TEST TC-151A.
(6) Replace Powertrain Control Module (PCM). Perform TEST VER-2A.
(7) On Breeze, Cirrus, Stratus and Sebring Convertible, refer to appropriate BODY CONTROL COMPUTER TESTS article in ACCESSORIES & EQUIPMENT in appropriate lemon-25® manual. On all other bodies, use appropriate transmission diagnostic manual.
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