BMW DTC C1043 – Brake System Vacuum Pump Control Circuit High
DTC C1043 meaning on BMW
DTC C1043 on a BMW indicates a fault in the Brake System Vacuum Pump Control Circuit, specifically a high voltage condition.
BMW DTC C1043 symptoms
Common symptoms of DTC C1043 on a BMW may include:
- ABS warning light illuminated on the dashboard
- Loss of power brakes
- Strange noises coming from the vacuum pump
BMW DTC C1043 causes
The possible causes of DTC C1043 on a BMW can include:
- Faulty vacuum pump control module
- Short circuit or open circuit in the wiring related to the vacuum pump control circuit
- Issues with the vacuum pump itself
BMW DTC C1043 seriousness
DTC C1043 should be addressed promptly as it can lead to a loss of power assistance in the braking system, potentially compromising vehicle safety.
How to diagnose DTC C1043 on BMW
To diagnose DTC C1043 on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s computer
- Inspect the vacuum pump control module and related wiring for any visible damage
- Test the vacuum pump operation and control circuit using a multimeter
How to fix DTC C1043 on BMW
To fix DTC C1043 on a BMW, the following steps may be taken:
- Replace the faulty vacuum pump control module if necessary
- Repair any damaged wiring in the vacuum pump control circuit
- Ensure proper operation of the vacuum pump
How to erase DTC C1043 on BMW
After the issue causing DTC C1043 on a BMW has been resolved, the fault code can be cleared using a diagnostic scanner. This will erase the code from the vehicle’s computer memory.
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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