BMW DTC P2402 – EVAP System Leak Detection Pump Control Circuit High
DTC P2402 meaning on BMW
DTC P2402 on a BMW indicates a fault with the Evaporative Emission Control System Leak Detection Pump Control Circuit. This code specifically points to a high voltage condition in the circuit, signaling a potential issue with the control module or wiring related to the leak detection pump.
BMW DTC P2402 symptoms
Symptoms of DTC P2402 on a BMW may include the illumination of the Check Engine Light on the dashboard. In some cases, the vehicle may exhibit rough idling, decreased fuel efficiency, or difficulty starting.
BMW DTC P2402 causes
The common causes of DTC P2402 on a BMW include a faulty leak detection pump, damaged wiring or connectors in the control circuit, or a malfunctioning control module. Additionally, a loose gas cap or a leak in the evaporative emission system can trigger this fault code.
BMW DTC P2402 seriousness
While DTC P2402 may not cause immediate drivability issues, it is essential to address this fault promptly. Ignoring this code can lead to increased emissions, potential damage to the catalytic converter, and may result in the vehicle failing an emissions test.
How to diagnose DTC P2402 on BMW
To diagnose DTC P2402 on a BMW, a mechanic would typically start by using a diagnostic scanner to retrieve the fault code and perform a visual inspection of the evaporative emission system components. They may test the leak detection pump, inspect the wiring for any damage, and check the control module for proper operation.
How to fix DTC P2402 on BMW
Fixing DTC P2402 on a BMW involves addressing the root cause of the issue. This may include replacing a faulty leak detection pump, repairing damaged wiring or connectors, or reprogramming the control module if necessary. It is crucial to follow the manufacturer’s diagnostic and repair procedures to ensure a proper fix.
How to erase DTC P2402 on BMW
Once the underlying issue causing DTC P2402 on a BMW has been resolved, the fault code can be cleared using a diagnostic scanner. By clearing the code, the Check Engine Light should turn off. However, if the problem persists, the code may reappear, indicating that further diagnosis and repairs are needed.
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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