Diesel Data: Automotive Repair

Codes 31 Thru 37


Code 31

Indicates an open or short in the canister purge solenoid circuit.


Code 32

Indicates an open or short in the power loss lamp circuit.


Code 33

Indicates an open or short in the air conditioning wide open throttle cut out relay circuit.


Code 34

On 1983-84 models, indicates an open or short in EGR solenoid circuit. On 1985 models, indicates problem in spare driver circuit.


Code 35

Indicates a problem in the fan relay circuit. This code appears if the radiator fan is either not operating or operating at the incorrect time.


Code 36

On 1985 models, indicates problem in spare driver circuit.


Code 37

On 1985 models, indicates problem in shift indicator lamp circuit.