BMW DTC P1893 – Supply Voltage Pressure Control Solenoid/Shift Solenoid Circuit High
DTC P1893 meaning on BMW
The Diagnostic Trouble Code (DTC) P1893 for BMW indicates a fault in the Supply Voltage Pressure Control Solenoid/Shift Solenoid Circuit, specifically a high voltage condition. This fault is related to the transmission control system of the vehicle.
BMW DTC P1893 symptoms
Symptoms of DTC P1893 on a BMW may include harsh shifting, delayed shifting, transmission slipping, decreased fuel efficiency, and in some cases, the transmission may go into a limp mode where it operates in a single gear only.
BMW DTC P1893 causes
The common causes of DTC P1893 on a BMW include a faulty pressure control solenoid, a malfunctioning shift solenoid, damaged wiring or connectors in the solenoid circuit, low transmission fluid level, or a problem with the transmission control module.
BMW DTC P1893 seriousness
DTC P1893 should be addressed promptly as it can lead to further damage to the transmission if left unresolved. Ignoring this fault may result in more severe transmission issues and potentially costly repairs.
How to diagnose DTC P1893 on BMW
To diagnose DTC P1893 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault codes from the vehicle’s onboard computer. They would then inspect the pressure control solenoid, shift solenoid, wiring, and connectors for any visible damage or corrosion. Testing the solenoids and circuits with a multimeter may also be necessary to pinpoint the exact cause of the fault.
How to fix DTC P1893 on BMW
Fixing DTC P1893 on a BMW may involve replacing the faulty pressure control solenoid or shift solenoid, repairing any damaged wiring or connectors, ensuring the transmission fluid level is correct, 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 this fault.
How to erase DTC P1893 on BMW
Once the underlying issue causing DTC P1893 on a BMW has been resolved, the fault code can be cleared using a diagnostic scanner. By clearing the code, the Check Engine Light or Transmission Warning Light should turn off. It is important to ensure that the repair has been successful before erasing the fault code to prevent it from reoccurring.
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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