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P0135 Diagnostic Trouble Code Discussion for April 2015

Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Performance

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Trouble Ticket Help Requests for DTC P0135
Help Request Posted
2001 Buick LeSabre Custom 3.8L MIL Lamp on VIN: 1G4HP54K71
P0135: Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction. ... the mil light came on with code p0135 a few days later. We tested sensor and it looked good. We cleaned the ground connector at the bell housing and gave back the car. The code returned within a few days. We rechecked the wiring, loaded it with a light hea...
April 30, 2015