BMW DTC P1235 – Fuel Pump Intermediate Shaft Sensor
DTC P1235 meaning on BMW
The DTC P1235 fault code on BMW vehicles indicates an issue with the Fuel Pump Intermediate Shaft Sensor. This sensor is responsible for monitoring the position of the fuel pump intermediate shaft, which is crucial for the proper functioning of the fuel pump system.
BMW DTC P1235 symptoms
Symptoms of a DTC P1235 on a BMW may include rough idling, engine stalling, difficulty starting the vehicle, decreased fuel efficiency, and in some cases, the vehicle may not start at all.
BMW DTC P1235 causes
The most common causes of a DTC P1235 on a BMW are a faulty fuel pump intermediate shaft sensor, wiring issues in the sensor circuit, or a malfunction in the fuel pump itself.
BMW DTC P1235 seriousness
The seriousness of a DTC P1235 fault code on a BMW should not be underestimated, as it directly affects the fuel delivery system of the vehicle. Ignoring this issue can lead to engine performance problems and potential stalling, which can be dangerous, especially while driving.
How to diagnose DTC P1235 on BMW
To diagnose a DTC P1235 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and then perform a visual inspection of the fuel pump intermediate shaft sensor and its wiring. Testing the sensor’s resistance and checking for any loose connections or damaged wires are common diagnostic steps.
How to fix DTC P1235 on BMW
Fixing a DTC P1235 on a BMW usually involves replacing the faulty fuel pump intermediate shaft sensor. It is important to use OEM or high-quality replacement parts to ensure proper functionality. Additionally, checking and repairing any damaged wiring or connections in the sensor circuit is essential to prevent future issues.
How to erase DTC P1235 on BMW
After fixing the underlying issue causing the DTC P1235 fault code on a BMW, the code can be erased using a diagnostic scanner. By clearing the fault code, the vehicle’s onboard computer will reset and monitor the system for any recurring issues.
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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