Check Engine Light Due to Failed Oxygen Sensor Heater on Toyota 4Runner

The heater circuit for the oxygen sensor tends to have a higher than normal failure rate. Failure of the oxygen sensor heater circuit will illuminate the Check Engine Light. The internal oxygen sensor heater cannot be repaired, the failed sensor should be replaced to correct this concern.

 

RepairPal Verified
Average mileage: 144,750 (107,000–190,000)
5 model years affected: 1998, 1999, 2000, 2001, more2002
10 people reported this problem
0 people shared problem details
Related Items:
check engine light, vsc trac and trac off lights all on,dealer claimed that it's for the oxygen...
Replaced oxygen sensor (bank one) but mechanic indicated there were multiple codes. Said there is a possibility that...
2005 4Runner The ABS pump failed, is this a faulty part? Not even 70,000 on car
Check codes P0133 stated: #3 misfire & P0130 slow response O2sensor bank 1, sensor1. I had spare Coils & wires from a 40K exchange engine from japan, inst...

Related Content