computer codes po135 and po141 heater circuit not working. where do i start checking for this problem ? Both sensors are bosch and are brand new.
Apr 22, 2008 at 12:09 PM
2004 Chevy Truck o2 sensors
BRAD1683
- MEMBER
- 1 POST
fuses and relays
check the wiring harness
check the wiring harness
Apr 27, 2008 at 11:31 AM
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