BMW DTC P0655 – Engine Hot Lamp Output Control Circuit
DTC P0655 meaning on BMW
The Diagnostic Trouble Code (DTC) P0655 for BMW refers to a malfunction in the engine hot lamp output control circuit. This code indicates that there is an issue with the control circuit responsible for activating the engine hot lamp, which is designed to warn the driver of potential overheating issues.
BMW DTC P0655 symptoms
Symptoms of DTC P0655 on a BMW may include the engine hot lamp not illuminating when the engine temperature is high, or the lamp staying on even when the engine is not overheating. In some cases, the Check Engine Light may also be illuminated on the dashboard.
BMW DTC P0655 causes
The common causes of DTC P0655 on a BMW include a faulty engine hot lamp, a malfunctioning engine temperature sensor, wiring issues in the control circuit, or a problem with the engine control module (ECM).
BMW DTC P0655 seriousness
While DTC P0655 itself may not directly affect the performance of the vehicle, it is crucial to address this issue promptly as it relates to the engine’s temperature monitoring system. Ignoring this code could lead to potential overheating problems, which may cause severe engine damage if not resolved.
How to diagnose DTC P0655 on BMW
To diagnose DTC P0655 on a BMW, a mechanic would typically start by using a diagnostic scanner to retrieve the specific fault codes stored in the ECM. They would then inspect the engine hot lamp, engine temperature sensor, and the wiring connections associated with the control circuit to identify any visible signs of damage or malfunction.
How to fix DTC P0655 on BMW
The repair process for DTC P0655 on a BMW may involve replacing the faulty engine hot lamp, repairing or replacing the engine temperature sensor, checking and repairing any damaged wiring in the control circuit, or reprogramming the ECM if necessary. It is essential to follow the manufacturer’s diagnostic and repair procedures to ensure a proper fix.
How to erase DTC P0655 on BMW
Once the underlying issue causing DTC P0655 on a BMW has been resolved, the fault codes can be cleared using a diagnostic scanner. This will reset the Check Engine Light and allow the system to monitor the engine’s temperature without any stored fault codes.
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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