Trouble Code Definition

TROUBLE CODE DEFINITION

Code No.

Circuit Affected

12⁽¹⁾

No RPM Reference Pulse

CODE 13

Open Oxygen Sensor Circuit

CODE 14

Coolant Temp Sens Sgnl Vltge Low (Hi Temp Indicated)

CODE 15

Coolant Temp Sensor Signal Voltage Low

CODE 19

Intermittent 7X Signal

CODE 21

Throttle Position Sensor Signal Voltage High

CODE 22

Throttle Position Sensor Signal Voltage Low

CODE 23

IAT Sensor Signal Voltage High (Low Temp Indicated)

CODE 24

Vehicle Speed Sensor

CODE 25

IAT Sensor Signal Voltage Low (High Temp Indicated)

CODE 26

Quad-Driver Module Error

CODE 27

Quad-Driver No. 1 Error

CODE 28

Quad-Driver No. 2 Error

CODE 32

EGR System Error

CODE 33

MAP Sensor Signal Voltage High

CODE 34

MAP Sensor Signal Voltage Low

CODE 35

IAC Idle Speed Error

CODE 43

Knock Sensor Error

CODE 44

Lean Exhaust Indication

CODE 45

Rich Exhaust Indication

CODE 51

Faulty PROM/MEM-CAL

CODE 52

Faulty CAL-PAK

CODE 53

System Voltage High

CODE 55

PCM Error

CODE 55

Fuel Lean Monitor

CODE 66

A/C Pressure Sensor

⁽¹⁾

Display of a Code 12 is normal when reference pulses are not being received by control module (engine not running).