P1142 – BMW DTC

BMW DTC P1142 – Value Comparison Throttle Position Sensor 2 / Hot Film Air Mass Meter (Bank 2)

DTC P1142 meaning on BMW

The DTC P1142 on a BMW indicates a value comparison fault between the Throttle Position Sensor 2 and the Hot Film Air Mass Meter in Bank 2 of the engine. This fault typically points to an issue with the electronic throttle control system or the air intake system.

BMW DTC P1142 symptoms

Symptoms of DTC P1142 on a BMW may include:

• Check Engine Light illuminated
• Reduced engine power
• Poor acceleration
• Engine stalling
• Rough idling

BMW DTC P1142 causes

Common causes of DTC P1142 on a BMW include:

• Faulty Throttle Position Sensor 2
• Malfunctioning Hot Film Air Mass Meter
• Wiring or connector issues in the throttle control or air intake system
• Software or calibration issues

BMW DTC P1142 seriousness

The seriousness of DTC P1142 on a BMW depends on the underlying cause. Ignoring this fault can lead to drivability issues, reduced fuel efficiency, and potential engine damage if left unresolved. It is recommended to address this fault promptly to prevent further complications.

How to diagnose DTC P1142 on BMW

To diagnose DTC P1142 on a BMW, a mechanic would typically perform the following steps:

1. Use a diagnostic scanner to retrieve the fault codes and freeze frame data
2. Inspect the Throttle Position Sensor 2 and Hot Film Air Mass Meter in Bank 2 for any visible damage or contamination
3. Check the wiring and connectors for any signs of wear or corrosion
4. Perform a thorough inspection of the air intake system for leaks or restrictions
5. Test the functionality of the throttle control system using specialized diagnostic tools

How to fix DTC P1142 on BMW

To fix DTC P1142 on a BMW, the following steps may be taken:

1. Replace the faulty Throttle Position Sensor 2 or Hot Film Air Mass Meter in Bank 2
2. Repair or replace any damaged wiring or connectors in the throttle control or air intake system
3. Perform a software update or calibration of the electronic control modules
4. Clean or replace the air filter if necessary
5. Clear the fault codes and perform a test drive to ensure the issue is resolved

How to erase DTC P1142 on BMW

To erase DTC P1142 on a BMW, follow these steps:

1. Use a diagnostic scanner to clear the fault codes stored in the engine control module
2. Ensure that the underlying issue causing the fault code has been addressed
3. Perform a test drive to verify that the Check Engine Light does not reappear

Recommended tools & DTC Scanners for BMW

Best Diagnostic App for modern BMWs: BimmerLink

Recommended Bluetooth adapter for Bimmerlink: OBDLink CX

Cable adapter for Bimmerlink: Enet Cable USB Type C

For older BMWs we recommend: Autel AutoLink AL319 (2024 version)

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

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