17525/P1117
From Ross-Tech Wiki
17525/P1117 - Oxygen (Lambda) Sensor Heating Circuit: B1 S2: Short to Ground
Possible Symptoms
- Malfunction Indicator Light (MIL) ON
Possible Causes
- Failed O2 sensor heater circuit
- Wiring Harness issue
- Failing ECM
Possible Solutions
- Inspect and test O2 sensor heater circuit as per repair manual
- Inspect and test wiring harness as per wiring diagram
- Replace ECM if O2 sensor and wiring harness are to factory design