Circuito del sensor de O2

Descripción

This code points to a general issue with the circuit of an oxygen sensor, often the one after the catalytic converter. It means the computer is having trouble communicating with or reading data from this sensor.

Pasos de reparación

1. 1 Check for exhaust leaks near the oxygen sensor (Bank 1, Sensor 2) and repair any damaged gaskets or cracked exhaust pipes.
2. 2 Inspect the wiring and connector to the downstream O2 sensor for damage, corrosion, fraying, or loose connections, and repair as needed.
3. 3 Check for contamination on the O2 sensor caused by oil burning, coolant leaks, or use of silicone-based sealants, and address the root cause.
4. 4 Remove and test the downstream oxygen sensor with a multimeter to verify proper voltage output and heater circuit resistance.
5. 5 Replace the faulty downstream oxygen sensor (Bank 1, Sensor 2) with an OEM or quality aftermarket unit.
6. 6 Clear the diagnostic trouble codes and drive the vehicle through a complete drive cycle to confirm the repair.
7. 7 If the code returns after replacing the sensor and verifying wiring, have the engine control module (ECM) tested and reprogrammed or replaced by a professional.

Diagnóstico y costo