BMW DTC P0874 – Transmission Fluid Pressure Sensor/Switch ‘C’ Circuit Intermittent
DTC P0874 meaning on BMW
The Diagnostic Trouble Code (DTC) P0874 for BMW refers to a transmission fluid pressure sensor/switch ‘C’ circuit intermittent issue. This code indicates that there is a problem with the transmission fluid pressure sensor or switch in the ‘C’ circuit, which can lead to intermittent malfunctions in the transmission system.
BMW DTC P0874 symptoms
Symptoms of DTC P0874 on a BMW may include erratic shifting behavior, harsh shifting, transmission slipping, delayed engagement when shifting gears, and in some cases, the transmission may go into a limp mode to prevent further damage.
BMW DTC P0874 causes
The common causes of DTC P0874 on a BMW include a faulty transmission fluid pressure sensor/switch, damaged wiring or connectors in the ‘C’ circuit, low transmission fluid level, contaminated or degraded transmission fluid, or a malfunctioning transmission control module.
BMW DTC P0874 seriousness
Ignoring DTC P0874 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 transmission components.
How to diagnose DTC P0874 on BMW
To diagnose DTC P0874 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and then perform a visual inspection of the transmission fluid pressure sensor/switch and its wiring. They may also conduct a test drive to observe the transmission’s behavior and perform further tests to pinpoint the exact cause of the issue.
How to fix DTC P0874 on BMW
Fixing DTC P0874 on a BMW may involve replacing the faulty transmission fluid pressure sensor/switch, repairing or replacing damaged wiring or connectors, ensuring the transmission fluid level is correct and of good quality, and resetting the transmission control module. It is recommended to follow the manufacturer’s repair procedures or seek assistance from a qualified mechanic to properly address the issue.
How to erase DTC P0874 on BMW
Once the underlying issue causing DTC P0874 on a BMW has been fixed, the fault code can be erased using a diagnostic scanner. By clearing the code, the Check Engine Light or transmission warning light should turn off, indicating that the issue has been resolved. 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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