The OBD code P143E for BMW indicates a fault with the Direct Ozone Reduction Catalyst Temperature Sensor.
Symptoms include the Engine Light being ON.
This issue can be caused by a faulty sensor, open/shorted harness, or poor electrical connection.
It is important to address this problem promptly to prevent potential damage to the catalytic converter.
A possible fix involves inspecting the sensor, wiring harness, and connectors for any issues.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
Symptoms of the Bmw p143e OBD Code
The vehicle may experience issues with the exhaust gas recirculation (EGR) system due to fault code BMW P143E.
- Symptoms: Service Engine Soon Warning Light ON.
- Reduced engine performance.
- Rough idle.
- Engine stalling at low speeds.
- Hesitation during acceleration.
Causes of the Bmw p143e OBD Code
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Possible triggers for BMW fault code P143E include issues with the exhaust gas recirculation system.
- P143E can be caused by a Faulty Direct Ozone Reduction Catalyst Temperature Sensor.
- A Direct Ozone Reduction Catalyst Temperature Sensor harness that is open or shorted.
- A Direct Ozone Reduction Catalyst Temperature Sensor circuit with poor electrical connection.
Fixing Bmw Error Code p143e Step By Step
To resolve BMW fault code P143E, inspect and clean the exhaust gas recirculation (EGR) valve.
- To fix BMW OBDII code P143E, first, 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.
- Next, check the operation of the secondary air injection pump and associated components for any faults or malfunctions.
- Test the secondary air injection system for proper operation and check for any leaks or blockages in the system.
- If necessary, replace the secondary air injection pump or any faulty components.
- Finally, clear the fault codes and perform a test drive to verify that the issue has been resolved.
Cost Of Fixing Bmw p143e Fault Code
Diagnosing and repairing BMW fault code P143E may involve replacing the NOx sensor or related components.
The cost to diagnose and fix BMW OBD code P143E depends on the estimated 1. 0hour repair time.
Labor rates range from $75 to $150 per hour, so the general cost could be between $75 and $150. Factors like shop rates and complexity can affect the final cost.
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Details of the Bmw p143e OBD Code
Code BMW P143E relates to the evaporative emission system purge control valve circuit malfunction.
BMW OBD code P143E means Cylinder 1 Fuel Injector Offset Learning at Max Limit.
This code is triggered by the Engine Control Module (ECM) when it detects that the offset learning for the fuel injector in cylinder 1 has reached its maximum limit.
This code is related to the fuel injection system and indicates that the ECM is unable to adjust the fuel injector offset in cylinder 1 within the acceptable range.
Mechanic’s Tech Notes
Detailed information on BMW fault code P143E, including symptoms, causes, and diagnostic procedures.
To diagnose and fix OBDII code BMW P143E, start by visually inspecting the wiring harness and connectors related to the transmission control module (TCM).
Look for any damaged components and check connector pins for signs of damage or corrosion.
Use a multimeter to test TCM power and ground connections.
Additionally, use a scan tool to verify if the TCM is communicating over the Controller Area Network (CAN) network.
If necessary, consider reprogramming or reflashing the TCM.
This comprehensive approach will help pinpoint the root cause of the code and facilitate an effective repair.
FAQ
OBD code P143E in a BMW indicates an issue with the Direct Ozone Reduction Catalyst Temperature Sensor. Check sensor, harness, and connections for faults.
OBD code P143E in a BMW is commonly caused by a faulty Direct Ozone Reduction Catalyst Temperature Sensor, sensor harness issues, or poor electrical connections.
Diagnose and fix OBD code P143E in your BMW by checking the Direct Ozone Reduction Catalyst Temperature Sensor and its wiring for faults or poor connections.
Wrap Up
If your BMW is displaying OBD code P143E, you may experience issues with the DEF (diesel exhaust fluid) system.
This could be caused by a faulty DEF tank level sensor, wiring problems in the DEF system, or a low DEF fluid level.
To address BMW OBD code P143E, start by checking the DEF tank level sensor for proper operation and inspecting the wiring harness for any damage or loose connections.
Ensure the DEF fluid level is adequate and look for any leaks in the DEF system that may be causing the problem.
