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P0135 Diagnostic Trouble Code Discussion for November 2014

Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Performance

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Trouble Ticket Help Requests for DTC P0135
Help Request Posted
1996 Chevrolet C1500 5.0L Cuts out, Stall, Hard Start VIN: 1GCEC14M6T
P0135: Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction. Working on a worn out 1996 C1500. Hard start almost always, runs for 10-15 seconds, stalls. When it does run longer, it cuts out with quick throttle input and backfires. It starts easier on carb clean. Fuel pump was leaking back pressure, so we replaced it a...
November 18, 2014