DTC B1287 Dodge
O2 (B2 S1) Circuit Short to Ground
O2 (B2 S1) Circuit Short to Ground
Description
Engine runtime less than 3 seconds, ECT Sensor less than 120 #186;F at engine startup, and the PCM detected the O2 signal indicated less than 160 mV right after engine startup
Cause and Solution
O2 signal circuit is shorted to chassis or Sensor groundO2 signal circuit is open (circuit reads 450 mV when open)O2 ground circuit is open (circuit reads 170 mV when open)O2 may be contaminated or it has failedPCM has failed
Video Guide
Diagnostic Info
- DTC Code: B1287
- Brand: Dodge