BMW DTC P0974 – Shift Solenoid ‘A’ Control Circuit High
DTC P0974 meaning on BMW
DTC P0974 indicates a malfunction in the Shift Solenoid ‘A’ control circuit of a BMW vehicle. This fault code is specific to the transmission system and points towards an issue with the electrical circuit that controls the operation of the Shift Solenoid ‘A’.
BMW DTC P0974 symptoms
Symptoms of DTC P0974 in a BMW may include harsh shifting, delayed shifting, transmission slipping, or the transmission getting stuck in a particular gear. The vehicle may also experience decreased fuel efficiency and overall performance issues.
BMW DTC P0974 causes
The common causes of DTC P0974 in a BMW include a faulty Shift Solenoid ‘A’, damaged wiring or connectors in the control circuit, low transmission fluid levels, or a defective transmission control module (TCM).
BMW DTC P0974 seriousness
Ignoring DTC P0974 in 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 P0974 on BMW
To diagnose DTC P0974 on a BMW, a mechanic would typically start by using a diagnostic scanner to retrieve the fault codes from the vehicle’s onboard computer. They would then inspect the Shift Solenoid ‘A’, check the wiring and connectors for any damage, and test the transmission fluid levels and quality. Further testing may be required to pinpoint the exact cause of the issue.
How to fix DTC P0974 on BMW
Fixing DTC P0974 on a BMW may involve replacing the faulty Shift Solenoid ‘A’, repairing any damaged wiring or connectors, ensuring the transmission fluid levels are correct, and resetting the TCM. 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 P0974 on BMW
Once the underlying issue causing DTC P0974 has been fixed, the fault code can be erased using a diagnostic scanner. This will clear the code from the vehicle’s memory and turn off the check engine light. 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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.