Retrieving Diagnostic Trouble Codes

NOTE: Battery must be fully charged before retrieving DTCs. If low battery voltage exists, Diagnostic Trouble Codes (DTCs) may not be output from the Engine Control Module (ECM).

Ensure battery is fully charged. Ensure ignition is off. Connect scan tool to Data Link Connector (DLC). DLC is a 16-pin connector located below driver's side of instrument panel. See Fig 1 .

Fig 1: Locating Data Link Connector (DLC)
Courtesy of CHRYSLER CORP.
Turn ignition on. Using scan tool manufacturer's instructions, record all DTCs displayed on scan tool. If scan tool is able to communicate with ECM and all vehicle systems as necessary, go to step 4).
If scan tool is unable to communicate with ECM, or all vehicle systems, proceed to TROUBLE SYMPTOMS and then perform a specified inspection procedure for diagnosis of the problem. TROUBLE SYMPTOMS are listed after the Diagnostic Trouble Code (DTC) tests, see SELF-DIAGNOSTIC SYSTEM section in this article.
Using all DTCs obtained, note DTC identification and perform specified DTC test. See DTC CODES, IDENTIFICATION & DTC TESTS table. Proceed to SELF-DIAGNOSTIC SYSTEM section in this article.
NOTE: Scan tool may be used in test mode 2 and test mode 5 for placing Engine Control Module (ECM) in different test modes for system diagnosis. For additional information on test modes, see TESTMODES under SELF-DIAGNOSTIC SYSTEM.
Once all repairs are made, ensure DTCs are cleared from ECM. See CLEARING DIAGNOSTIC TROUBLE CODES under SELF-DIAGNOSTIC SYSTEM. Perform vehicle drive cycle to ensure repair is complete and DTC is not reset. See VEHICLE DRIVE CYCLE under SELF-DIAGNOSTIC SYSTEM.

NOTE: Engine Control Module (ECM) contains a readiness test status which will record whether a good or bad judgment has been made after the completion of a previous monitoring operation. This record may be read using the scan tool. When using scan tool, if the word COMPLETE is displayed, the judgement operation has been completed. The record will be reset if the battery is disconnected or if the DTC is erased from the ECM. If the record is reset, you will need to perform appropriate vehicle drive cycle once or twice in order to set the status back to COMPLETE for the following DTCs: P0130, P0135, P0136, P0141 P0400, P0420, P0442 and P0455.

DTC CODES, IDENTIFICATION & DTC TESTS

DTC No.	System Malfunction	DTC Test No.
P0100	Volume Airflow Sensor	1
P0105	Barometric Pressure Sensor	2
P0110	Intake Air. Temp. Sensor	3
P0115	Engine Coolant Temp. Sensor	4
P0120	Throttle Position Circuit	5
P0125	Excessive Time To Enter Closed Loop	6
P0130	Front Oxygen Sensor	7
P0135	Front Oxygen Sensor Heater	8
P0136	Rear Oxygen Sensor	9
P0141	Rear Oxygen Sensor Heater	10
P0170	Fuel Trim Malfunction	11
P0201	No. 1 Fuel Injector Circuit	12
P0202	No. 2 Fuel Injector Circuit	12
P0203	No. 3 Fuel Injector Circuit	12
P0204	No. 4 Fuel Injector Circuit	12
P0300	Random Misfire	13
P0301	Cylinder No. 1 Misfire	14
P0302	Cylinder No. 2 Misfire	14
P0303	Cylinder No. 3 Misfire	14
P0304	Cylinder No. 4 Misfire	14
P0325	Knock Sensor	15
P0335	Crankshaft Position Sensor	16
P0340	Camshaft Position Sensor	17
P0400	EGR Malfunction	18
P0403	EGR Solenoid	19
P0420	Catalytic System Efficiency	20
P0442	EVAP Emission Control System Small Leak Detected	21
P0443	EVAP Purge Solenoid	22
P0446	EVAP Ventilation Solenoid	23
P0450	EVAP Pressure Sensor	24
P0455	EVAP Emission Control System Gross Leak Detected	25
P0500	Vehicle Speed Sensor	26
P0505	Idle Control System	27
P0510	Closed Throttle Position Sw.	28
P0551	Power Steering Pressure Sw.	29
P0705	Transaxle Range Sensor	30
P1103	Turbocharger Wastegate Actuator	31
P1104	Turbocharger Wastegate Solenoid	32
P1105	Fuel Pressure Solenoid	33
P1400	Manifold Differential Pressure Sensor	34
P1500	Generator FR Terminal Circuit	35
P1600	Serial Communication Link Malfunction	36
P1715	Pulse Generator Assembly Malfunction	37
P1750	Solenoid Assembly Malfunction	38
P1791	Engine Coolant Temp. Level Input To TCM Malfunction	39