The OBD code P1151 for Ford indicates a problem with the Upstream Oxygen Sensor Bank 2. Symptoms include the Engine Light being ON.
Causes may include a faulty oxygen sensor, fuel pressure issues, dirty MAF sensor, vacuum leaks, or a faulty PCM.
This issue should be addressed promptly to prevent further damage.
A possible fix involves checking and repairing any damaged components or wiring harnesses related to the mentioned causes.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 6.67 (Out of 10) |
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Symptoms of the Ford p1151 OBD Code
The vehicle may experience a lean condition due to a lack of fuel or excess air.
- Symptoms: Engine Light ON.
- Rough idle may be present.
- Hesitation or lack of power during acceleration.
- Vacuum leaks may be audible.
Causes of the Ford p1151 OBD Code
Possible reasons for Ford code P1151 include vacuum leaks, faulty oxygen sensor, or fuel system issues.
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- P1151 can be caused by a faulty Upstream Oxygen Sensor Bank 2.
- Fuel pressure being either high or low.
- A dirty or defective MAF sensor.
- A vacuum leak on the engine.
- A leaking fuel injector or fuel pressure regulator.
- Or a faulty Powertrain Control Module (PCM).
Fixing Ford Error Code p1151 Step By Step
Address the vacuum leak in the intake system to resolve Ford P1151 fault code.
- To fix Ford OBDII code P1151, review the ‘Possible Causes’ mentioned above and visually examine the corresponding wiring harness and connectors.
- Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- Check the intake air system for any leaks or restrictions.
- Inspect the Mass Air Flow (MAF) sensor for dirt or debris and clean if necessary.
- Verify the functionality of the oxygen sensors and replace if faulty.
- Finally, clear the fault codes and test drive the vehicle to ensure the issue has been resolved.
Cost Of Fixing Ford p1151 Fault Code
Diagnosing and repairing Ford P1151 involves checking for vacuum leaks and testing the oxygen sensor.
The cost to diagnose and fix Ford OBD code P1151 typically ranges from $75 to $150 per hour for labor rates.
With an estimated repair time of 1. 0 hour, the total cost can be around $75 to $150, depending on shop rates and the complexity of the issue.
Details of the Ford p1151 OBD Code
Ford code P1151 indicates an issue with the oxygen sensor on bank 2 not switching properly.
Ford OBD code P1151 means the upstream oxygen sensor on bank 2 is indicating a lean condition.
This code is triggered by the Engine Control Module (ECM) when it detects that the oxygen sensor is reading a lean air/fuel mixture for an extended period of time.
This indicates that there is too much oxygen in the exhaust gases, which can be caused by issues such as a vacuum leak, a faulty oxygen sensor, or a fuel delivery problem on bank 2 of the engine.
Mechanic’s Tech Notes
Detailed information on Ford code P1151, including possible causes and diagnostic steps for efficient troubleshooting.
To diagnose and fix OBDII code P1151 on a Ford vehicle, start by visually inspecting the wiring harness and connectors related to the upstream oxygen sensor (Bank 2 Sensor 1).
Look for any damaged components or corroded pins.
Use a voltmeter to check the sensor’s voltage output.
If the voltage is stuck lean, the sensor may be faulty.
Additionally, scan tools can help monitor sensor data and confirm if the sensor is responding correctly.
If all checks out, consider cleaning or replacing the oxygen sensor.
Remember to clear the code after making any repairs.
FAQ
Common causes of OBD code P1151 in a Ford vehicle include a faulty upstream oxygen sensor Bank 2, dirty MAF sensor, vacuum leak, or leaking fuel injector.
Diagnose and fix OBD code P1151 in a Ford: Symptoms Engine Light ON. Causes Faulty Upstream Oxygen Sensor Bank 2. Fix Check sensor and wiring for issues.
Yes, OBD code P1151 can cause drivability issues if not addressed promptly. It indicates a fault with the upstream oxygen sensor Bank 2.
Wrap Up
If your Ford is displaying OBD code P1151 and experiencing rough idle or lack of power, it may be caused by a vacuum leak, faulty oxygen sensor, or a dirty air filter.
These issues can lead to incorrect airfuel mixture readings.
To address Ford OBD code P1151, check for vacuum leaks in the intake system, inspect the oxygen sensor for proper operation, and replace the air filter if dirty.
Ensure the wiring harness to the sensor is intact and connections are secure.
