The P0135 code indicates a heater circuit malfunction in the downstream oxygen sensor (O2 sensor). Symptoms include rough idle, stalling, and check engine light.

Code P0135 indicates a malfunction in the oxygen sensor heater circuit, typically the upstream sensor. This sensor helps the engine control module monitor air-fuel mixture.

The P0135 code indicates an O2 sensor heater circuit malfunction. Since replacing the sensor didn’t help, check the sensor’s wiring harness for damage or corrosion.

Customer: I have a 2002 Chevy Silverado 1500 LT It shows a P0135 code _ bank1, sensor1 o2 electrical circuit fault. Replaced plugs, ign. wires, and all 4 o2 sensors.

2015 Chevy Equinox LT Oxygen Sensor Replacement Guide Equinox LT often faces oxygen sensor failures causing engine codes and poor fuel efficiency. Codes P0030 and P0135 …

Chevy Colorado 2005: Diagnosing Codes P0141, P0135, P0036, and P0300 Colorado often faces oxygen sensor failures and random misfires causing engine performance issues. Codes …

Troubleshooting P0135 Code and Misfire Issues in O2 Sensor-Equipped Cars Intermittent misfires and power loss often occur alongside oxygen sensor faults and fuel delivery inconsistencies. A …

Chevy Mechanic: Ron Z. P0135 is pointing to a fault with the internal heater for Oxygen Sensor Bank1 Sensor1. This sensor is located on the driver's side, before the Cat.

2002 Silverado P0135 Code: Oxygen Sensor Heater Circuit Issue Silverado often faces recurring oxygen sensor heater circuit faults and persistent P0135 codes after resets. Code P0135 …

Code is P0135- 02 Heater Circuit (Bank 1, Sensor 1). What part should I replace? or should I do other testing?