DTC P0146 Cadillac
HO2S-13 (Bank 1 Sensor 3) Insufficient Activity
HO2S-13 (Bank 1 Sensor 3) Insufficient Activity
Description
DTC P0118, P0118, P0122 and P0123 not set, engine speed from 800-3000 rpm, ECT more than 167ºF, TP angle from 2-81.6%, Throttle Position Switch open, and the PCM detected the HO2S input was steady at 307-609 mv for 250 of 300 seconds (HO2S signal is toggl
Cause and Solution
HO2S heater is damaged or has failed
HO2S signal or ground circuit has a high resistance condition
HO2S signal circuit is open or shorted to system power (B+)
HO2S has failed (i. e. , it is silicon, water or fuel contaminated)
Video Guide
Diagnostic Info
- DTC Code: P0146
- Brand: Cadillac