Scan Tool Method

Using a Tech-1 or other OBD-II compatible scan tool, interface PCM by connecting to OBD-II 16-pin DLC, located under instrument panel to left of steering column. Retrieve DTC following scan tool manufacturer's instructions.
If a DTC is present, identify DTC and diagnose accordingly. See DTC IDENTIFICATION table, then proceed to DIAGNOSTIC TESTING . After repairs are made, clear DTC. See CLEARING TROUBLE CODES . Test drive vehicle and ensure OD/OFF indicator or MIL does not illuminate.

DTC IDENTIFICATION

DTC

Condition

P0101 ⁽¹⁾

MAF Sensor Circuit Performance

P0102 ⁽¹⁾

MAF Sensor Circuit Low

P0103 ⁽¹⁾

MAF Sensor Circuit High

P0111 ⁽¹⁾

IAT Circuit Performance

P0112 ⁽¹⁾

IAT Circuit Low

P0113 ⁽¹⁾

IAT Circuit High

P0117 ⁽¹⁾

ECT Circuit Low

P0118 ⁽¹⁾

ECT Circuit High

P0121 ⁽¹⁾

TP Circuit Performance

P0122 ⁽¹⁾

TP Circuit Low

P0123 ⁽¹⁾

TP Circuit High

P0125 ⁽¹⁾

Coolant Temp. Too Low

P0131 ⁽¹⁾

HO2S-1 Circuit Low

P0132 ⁽¹⁾

HO2S-1 Circuit High

P0133 ⁽¹⁾

HO2S-1 Slow Response

P0134 ⁽¹⁾

HO2S-1 No Response

P0135 ⁽¹⁾

HO2S-1 Heater Failure

P0136 ⁽¹⁾

HO2S-2 Out Of Range

P0141 ⁽¹⁾

HO2S-2 Heater Failure

P0171 ⁽¹⁾

Fuel System Lean

P0172 ⁽¹⁾

Fuel System Rich

P0300 ⁽¹⁾

Random Misfire

P0301 ⁽¹⁾

Cylinder No. 1 Misfire

P0302 ⁽¹⁾

Cylinder No. 2 Misfire

P0303 ⁽¹⁾

Cylinder No. 3 Misfire

P0304 ⁽¹⁾

Cylinder No. 4 Misfire

P0335 ⁽¹⁾

CKP Malfunction

P0340 ⁽¹⁾

CMP Malfunction

P0400 ⁽¹⁾

EGR Malfunction

P0420 ⁽¹⁾

Catalyst Failure

P0440 ⁽¹⁾

EVAP System Leakage

P0443 ⁽¹⁾

EVAP Purge Flow Incorrect

P0450 ⁽¹⁾

EVAP Pressure Sensor Failure

P0451 ⁽¹⁾

EVAP Pressure Sensor Performance

P0455 ⁽¹⁾

Excessive EVAP Leakage

P0461 ⁽¹⁾

Fuel Level Sensor Performance

P0463 ⁽¹⁾

Fuel Level Sensor Circuit Open

P0500 ⁽¹⁾

VSS Failure

P0505 ⁽¹⁾

IAC Malfunction

P0601 ⁽¹⁾

PCM Check Sum Error

P0603 ⁽¹⁾

PCM Data Read Error From ROM

P0705

Transmission Range Switch Circuit

P0720

VSS (Transmission) Circuit

P0741

TCC Circuit Performance

P0743

TCC Solenoid Circuit

P0751

No. 1 Shift Solenoid Performance

P0753

No. 1 Shift Solenoid Circuit

P0756

No. 2 Shift Solenoid Performance

P0758

No. 2 Shift Solenoid Circuit

P1408 ⁽¹⁾

MAP Sensor Malfunction

P1410 ⁽¹⁾

Fuel Tank Pressure Control Malfunction

P1450 ⁽¹⁾

BARO Sensor Malfunction

P1451 ⁽¹⁾

BARO Sensor Performance

P1500 ⁽¹⁾

Starter Signal Malfunction

P1510 ⁽¹⁾

PCM Backup Power Malfunction

P1530 ⁽¹⁾

Ignition Timing Adjustment Switch Malfunction

P1875

4WD "LO" Switch Circuit

⁽¹⁾	For diagnostic procedures, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.