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Home >> Buick >> 1986 >> Skyhawk Sport, 2.0 P, Standard >> Repair and Diagnosis >> Engine Performance >> System >> 1.8L Turbo Tests W/Codes >> Trouble Code Component Identification
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Trouble Code Component Identification

ECM TROUBLE CODE IDENTIFICATION

Code Circuit Affected
12 (1)
13 Open oxygen sensor circuit.
14 Coolant sensor circuit shorted.
15 Coolant sensor circuit open.
21 TPS signal voltage high.
22 TPS signal voltage low.
23 M/C solenoid circuit open or grounded.
24 VSS circuit.
25 MAT sensor signal voltage low.
31 Wastegate solenoid.
32 BARO sensor circuit.
33 MAP sensor voltage too high.
34 MAP sensor voltage too low.
35 ISC switch circuit shorted.
41 No distributor reference circuit.
42 EST circuit.
43 ESC retard signal too low.
44 Lean oxygen sensor value.
45 Rich oxygen sensor value.
51 Faulty PROM, PROM installation or ECM.
52 Faulty CALPAC.
55 Faulty ECM.
(1) "12" will display only if no reference pulses are received by the ECM; it will never be stored as a malfunction.
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