BMW DTC P1273 – Boost Pressure Positioner Signal Plausibility (Bank 1)
DTC P1273 meaning on BMW
DTC P1273 on a BMW indicates a Boost Pressure Positioner Signal Plausibility issue in Bank 1. This fault code is triggered when the engine control module (ECM) detects a discrepancy between the expected boost pressure signal and the actual signal received from the boost pressure positioner sensor in Bank 1.
BMW DTC P1273 symptoms
Symptoms of DTC P1273 on a BMW may include:
- Reduced engine power
- Check Engine Light (CEL) illuminated
- Possible engine misfires
- Decreased fuel efficiency
BMW DTC P1273 causes
Common causes of DTC P1273 on a BMW include:
- Boost pressure sensor malfunction
- Wiring or connector issues in the boost pressure sensor circuit
- Boost pressure positioner failure
- Software or programming issues in the ECM
BMW DTC P1273 seriousness
DTC P1273 should not be ignored as it can lead to engine performance issues and potential damage if left unresolved. It is recommended to address this fault code promptly to prevent further complications.
How to diagnose DTC P1273 on BMW
To diagnose DTC P1273 on a BMW, you can perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the boost pressure sensor and its wiring for any visible damage or corrosion
- Check the boost pressure positioner for proper operation
- Perform a boost pressure system test to verify sensor readings
How to fix DTC P1273 on BMW
To fix DTC P1273 on a BMW, you can try the following solutions:
- Replace the boost pressure sensor if faulty
- Repair any damaged wiring or connectors in the boost pressure sensor circuit
- Replace the boost pressure positioner if necessary
- Update the ECM software to the latest version
How to erase DTC P1273 on BMW
To erase DTC P1273 on a BMW, you can clear the fault code using a diagnostic scanner. After addressing the underlying issue causing the fault code, you can reset the ECM and clear the code to ensure it 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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