BMW DTC P0935 – Hydraulic Pressure Sensor Circuit High
DTC P0935 meaning on BMW
DTC P0935 on a BMW indicates a high voltage condition in the hydraulic pressure sensor circuit. The hydraulic pressure sensor is responsible for monitoring the pressure in the transmission system. When the sensor detects a voltage higher than specified, it triggers the P0935 fault code.
BMW DTC P0935 symptoms
Symptoms of DTC P0935 on a BMW may include harsh shifting, transmission slipping, transmission overheating, and in some cases, the transmission may go into limp mode. The Check Engine Light (CEL) may also illuminate on the dashboard.
BMW DTC P0935 causes
The high voltage condition in the hydraulic pressure sensor circuit that triggers DTC P0935 on a BMW can be caused by issues such as a faulty hydraulic pressure sensor, damaged wiring or connectors in the sensor circuit, or a problem with the transmission control module.
BMW DTC P0935 seriousness
Ignoring DTC P0935 on a BMW can lead to further damage to the transmission system, potentially resulting in costly repairs. It is important to address this issue promptly to prevent any long-term damage to the vehicle.
How to diagnose DTC P0935 on BMW
To diagnose DTC P0935 on a BMW, a mechanic would typically start by using a diagnostic scanner to retrieve the fault code and perform a visual inspection of the hydraulic pressure sensor and its wiring. They may also conduct tests to check the sensor’s resistance and voltage readings to pinpoint the exact cause of the high voltage condition.
How to fix DTC P0935 on BMW
Fixing DTC P0935 on a BMW usually involves replacing the faulty hydraulic pressure sensor if it is determined to be the cause of the high voltage condition. Additionally, repairing any damaged wiring or connectors in the sensor circuit and ensuring proper connection to the transmission control module may be necessary to resolve the issue.
How to erase DTC P0935 on BMW
Once the underlying issue causing DTC P0935 on a BMW has been fixed, the fault code can be cleared using a diagnostic scanner. By clearing the code, the Check Engine Light will turn off, indicating that the problem has been addressed. It is important to verify that the issue has been resolved by driving the vehicle and ensuring that the fault code does not return.
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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