BMW DTC P1831 – Pressure Control Solenoid ‘A’ Circuit High
DTC P1831 meaning on BMW
DTC P1831 on a BMW indicates an issue with the Pressure Control Solenoid ‘A’ Circuit being detected as high. This means that the signal voltage from the pressure control solenoid ‘A’ is higher than the expected range, causing the engine control module (ECM) to trigger the fault code.
BMW DTC P1831 symptoms
Symptoms of DTC P1831 on a BMW may include harsh shifting, delayed shifting, transmission slipping, decreased fuel efficiency, and in some cases, the transmission may go into a fail-safe mode to prevent further damage.
BMW DTC P1831 causes
The common causes of DTC P1831 on a BMW include a faulty pressure control solenoid ‘A’, damaged wiring or connectors in the solenoid circuit, low transmission fluid level, or a malfunctioning ECM.
BMW DTC P1831 seriousness
DTC P1831 should be addressed promptly as it can lead to further transmission issues if left unresolved. Ignoring this fault code may result in more severe transmission damage and potentially costly repairs.
How to diagnose DTC P1831 on BMW
To diagnose DTC P1831 on a BMW, a mechanic would typically start by using a diagnostic scanner to retrieve the fault codes and then perform a visual inspection of the pressure control solenoid ‘A’ and its wiring. They may also conduct tests to check the solenoid’s resistance and functionality to pinpoint the exact cause of the high circuit voltage.
How to fix DTC P1831 on BMW
Fixing DTC P1831 on a BMW usually involves replacing the faulty pressure control solenoid ‘A’ and repairing any damaged wiring or connectors in the circuit. Additionally, ensuring the transmission fluid level is correct and performing a transmission fluid flush and filter replacement may also be necessary.
How to erase DTC P1831 on BMW
After fixing the underlying issue causing DTC P1831 on a BMW, the fault code can be erased using a diagnostic scanner. By clearing the fault code, the ECM will no longer detect the previous issue, and the transmission should operate normally without triggering the fault code again.
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.