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1996 Chevrolet C15 350 Engine - P0157, P1406, P1860 Fault Code Diagnosis and Fixes

Model: 95 Chev Fault Code: P0157 Posted: 2012-02-23 14:38

Vehicle: 1996 Chevrolet C15 35-0 Engine Fault Codes: P0157, P1406, P1860 Seeking expert advice on diagnosing and resolving these OBD-II fault codes in a 1996 Chevrolet C15 with a 350 engine. P0157 - Oxygen Sensor (O2) Circuit Malfunction (Passenger Side) P1406 - EGR System Performance Issue P1860 - TCC (Torque Converter Clutch) Control Circuit Malfunction The vehicle is showing multiple fault codes, and I'm looking for reliable troubleshooting steps specific to this model year and engine configuration. Any insights on how to address these issues safely and effectively would be greatly appreciated.

Related fault codes

P0157P1406P1860

Comments (2)

Anonymous 2012-02-23 19:11

I'm experiencing P0742 with occasional hard shifts and a tendency to hang in second gear when stopping—appears to skip a bottom gear. This may be related to transmission issues, possibly involving EGR or TCC components.

Anonymous 2012-02-24 08:08

Coschina35: Given the age of your vehicle: - P0157: Replace the passenger-side oxygen sensor located behind the catalytic converter with a dealer-grade unit—avoid aftermarket sensors for reliability. - P1406: Inspect EGR wiring connections and consider replacing the EGR valve if faulty. - P1860: Check TCC control wires and connectors, as well as the solenoid operation. Steven: This is not a John Deere tractor—please ensure your post remains relevant to the vehicle model discussed. Avoid hijacking existing threads; start a new one if necessary.