Questions & Answers for: Buick error 42 Cars & Trucks

Question about 1989 Regal

1 Answer

...42 C3I EST or bypass circuit failure 43 electronic spark control (ESC) circuit 44 oxygen sensor circuit (lean exhaust) 45 oxygen sensor circuit (rich exhaust) 51 PROM error 52 calpak error 55 ECM ...

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...42. What does this indicate? ignition control [ic] error check the wiring and connections on the ignition control module usually located on the passenger side of engine by crankshaft position sensor ...

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...error 38 brake input circuit fault 39 clutch input circuit fault 41 cam sensor circuit fault, igntion control circuit fault 42 electronic spark timing (EST) circuit grounded 43 knock sensor or ...

Question about 1993 Park Avenue

1 Answer

...error 38 brake input circuit fault 39 clutch input circuit fault 41 cam sensor circuit fault, igntion control circuit fault 42 electronic spark timing (EST) circuit grounded 43 knock sensor or ...

Question about 1989 Century

1 Answer

...error 38 brake input circuit fault 39 clutch input circuit fault 41 cam sensor circuit fault, igntion control circuit fault 42 electronic spark timing (EST) circuit grounded 43 knock sensor ...

42, ignition bypass circuit error in the EST. 1. "automotivehelper.com/topic185621.htm"2. "car.forums.com/s9/t5454.html"I'm thinking these could explain a lot of your problems even though your car

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