Ford DTC P1137 – Lack of Downstream Heated Oxygen Sensor Switch – Sensor Indicates Lean – Bank No. 1
DTC P1137 meaning on Ford
- DTC: P1137
- Definition: Lack of Downstream Heated Oxygen Sensor Switch – Sensor Indicates Lean – Bank No. 1
- Meaning: The downstream oxygen sensor in Bank 1 is detecting a lean air-fuel mixture condition.
Ford DTC P1137 symptoms
- Check Engine Light (MIL) illuminated
- Possible decrease in fuel efficiency
- Engine may run rough or hesitate
Ford DTC P1137 causes
- Faulty downstream oxygen sensor
- Vacuum leaks in the intake system
- Fuel delivery issues
- Exhaust leaks near the sensor
Ford DTC P1137 seriousness
- Severity: Moderate
- Driving with this DTC may lead to decreased fuel efficiency and potential engine performance issues.
How to diagnose DTC P1137 on Ford
- Use an OBD-II scanner to retrieve the DTC and freeze frame data
- Inspect the downstream oxygen sensor for proper operation
- Check for vacuum leaks and exhaust system integrity
- Verify fuel delivery system functionality
How to fix DTC P1137 on Ford
- Replace the downstream oxygen sensor if faulty
- Repair any vacuum leaks in the intake system
- Address fuel delivery issues if present
- Fix any exhaust leaks near the sensor
How to erase DTC P1137 on Ford
- Use an OBD-II scanner to clear the DTC
- If the underlying issue is fixed, the Check Engine Light should turn off
Recommended tools for Ford diagnostics
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