BMW DTC P0988 – Transmission Fluid Pressure Sensor/Switch ‘E’ Circuit Range/Performance
DTC P0988 meaning on BMW
DTC P0988 on a BMW indicates an issue with the Transmission Fluid Pressure Sensor/Switch ‘E’ Circuit. This code is set when the powertrain control module (PCM) detects that the signal from the transmission fluid pressure sensor/switch ‘E’ is outside the expected range or performance parameters.
BMW DTC P0988 symptoms
Symptoms of DTC P0988 on a BMW may include harsh shifting, transmission slipping, transmission overheating, illuminated Check Engine Light, and in some cases, the transmission may go into a limp mode to prevent further damage.
BMW DTC P0988 causes
The common causes of DTC P0988 on a BMW include a faulty transmission fluid pressure sensor/switch ‘E’, wiring issues in the sensor circuit, low transmission fluid level, dirty or contaminated transmission fluid, or a malfunctioning PCM.
BMW DTC P0988 seriousness
DTC P0988 should be addressed promptly as it can lead to further transmission damage if left unresolved. Ignoring this code may result in transmission failure and potentially costly repairs.
How to diagnose DTC P0988 on BMW
To diagnose DTC P0988 on a BMW, a mechanic would typically start by using a scan tool to retrieve the fault codes stored in the PCM. They would then inspect the transmission fluid level and condition, check the wiring and connectors related to the transmission fluid pressure sensor/switch ‘E’, and perform a thorough visual inspection for any visible damage.
How to fix DTC P0988 on BMW
Fixing DTC P0988 on a BMW may involve replacing the transmission fluid pressure sensor/switch ‘E’, repairing any damaged wiring or connectors, ensuring the transmission fluid is at the correct level and in good condition, and clearing the fault codes from the PCM.
How to erase DTC P0988 on BMW
To erase DTC P0988 on a BMW, a mechanic can use a scan tool to clear the fault codes stored in the PCM. Once the issue has been addressed and fixed, clearing the codes will reset the Check Engine Light and ensure that the system is rechecked for any new faults.
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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