BMW DTC P135F – Knock/Combustion Vibration Sensor 3 Circuit Range/Performance (Bank 2)
DTC P135F meaning on BMW
DTC P135F indicates a Knock/Combustion Vibration Sensor 3 Circuit Range/Performance issue on Bank 2 in a BMW vehicle. This fault code is triggered when the engine control module (ECM) detects that the signal from the Knock/Combustion Vibration Sensor 3 on Bank 2 is outside the expected range or is not performing as expected.
BMW DTC P135F symptoms
Symptoms of DTC P135F in a BMW may include engine knocking or pinging noises, reduced engine performance, rough idling, decreased fuel efficiency, and in some cases, the Check Engine Light may illuminate on the dashboard.
BMW DTC P135F causes
The common causes of DTC P135F in a BMW include a faulty Knock/Combustion Vibration Sensor 3, wiring or connector issues related to the sensor, engine mechanical problems, or a malfunctioning ECM.
BMW DTC P135F seriousness
Ignoring DTC P135F in a BMW can lead to potential engine damage, reduced fuel efficiency, and poor overall vehicle performance. It is important to address this issue promptly to prevent further complications.
How to diagnose DTC P135F on BMW
To diagnose DTC P135F on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault codes stored in the ECM. They would then inspect the Knock/Combustion Vibration Sensor 3 on Bank 2, check the sensor’s wiring and connectors for any damage, and perform a thorough inspection of the engine components related to combustion and knocking.
How to fix DTC P135F on BMW
Fixing DTC P135F on a BMW may involve replacing the faulty Knock/Combustion Vibration Sensor 3, repairing any damaged wiring or connectors, addressing any underlying engine mechanical issues, or reprogramming the ECM if necessary. It is recommended to follow the manufacturer’s diagnostic and repair procedures for a proper fix.
How to erase DTC P135F on BMW
After fixing the underlying issue causing DTC P135F on a BMW, the fault code can be erased using a diagnostic scanner that has the capability to clear fault codes. Once the code is cleared, the Check Engine Light should turn off. It is important to ensure that the repair has been successful before clearing the fault code.
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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