P1137 – Ford DTC

Ford DTC P1137 – Lack of Downstream Heated Oxygen Sensor Switch – Sensor Indicates Lean – Bank No. 1

DTC P1137 meaning on Ford

1. DTC: P1137
2. Definition: Lack of Downstream Heated Oxygen Sensor Switch – Sensor Indicates Lean – Bank No. 1
3. 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

1. Severity: Moderate
2. 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

1. Use an OBD-II scanner to clear the DTC
2. If the underlying issue is fixed, the Check Engine Light should turn off