BMW DTC P18E2 – Transmission Range Sensor Circuit ‘A’/Circuit ‘B’ Shorted
DTC P18E2 meaning on BMW
DTC P18E2 on a BMW indicates a transmission range sensor circuit ‘A’/’B’ shorted. This fault code is triggered when the Engine Control Module (ECM) detects a short circuit in the transmission range sensor circuit ‘A’ or ‘B’.
BMW DTC P18E2 symptoms
Symptoms of DTC P18E2 on a BMW may include erratic shifting behavior, transmission slipping, inability to shift gears properly, and the transmission being stuck in one gear. The vehicle may also go into limp mode to prevent further damage.
BMW DTC P18E2 causes
The common causes of DTC P18E2 on a BMW include a faulty transmission range sensor, damaged wiring or connectors in the transmission range sensor circuit, or a short circuit in the circuit ‘A’ or ‘B’.
BMW DTC P18E2 seriousness
DTC P18E2 is a serious issue that can affect the drivability of the vehicle. Ignoring this fault code can lead to further damage to the transmission and other drivetrain components. It is recommended to address this issue promptly.
How to diagnose DTC P18E2 on BMW
To diagnose DTC P18E2 on a BMW, a mechanic would typically start by using a diagnostic scanner to retrieve the fault codes stored in the ECM. They would then inspect the transmission range sensor, wiring, and connectors for any visible damage. Testing the sensor’s resistance and checking for continuity in the circuit can help pinpoint the issue.
How to fix DTC P18E2 on BMW
Fixing DTC P18E2 on a BMW may involve replacing the faulty transmission range sensor, repairing or replacing damaged wiring or connectors, and clearing the fault codes from the ECM. It is important to ensure that the repairs are done correctly to prevent the issue from recurring.
How to erase DTC P18E2 on BMW
To erase DTC P18E2 on a BMW, a diagnostic scanner capable of clearing fault codes is needed. The mechanic would use the scanner to access the ECM, navigate to the fault codes section, and select the option to clear the DTC P18E2 code. Once the code is successfully cleared, the mechanic would verify that the code does not return during a test drive.
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.