BMW DTC P1573 – Electronic Control Module Sensor Supply B Low Output (S54/S62: ‘A’ Camshaft Position Actuator Control Circuit Low (Bank 2))
DTC P1573 meaning on BMW
The DTC P1573 on BMW vehicles refers to the Electronic Control Module Sensor Supply B Low Output. In specific models like the S54/S62, it may also indicate ‘A’ Camshaft Position Actuator Control Circuit Low on Bank 2. This fault code typically points to an issue with the sensor supply voltage being lower than the specified range.
BMW DTC P1573 symptoms
Symptoms of the DTC P1573 on a BMW may include engine misfires, rough idling, loss of power, poor acceleration, and in some cases, the vehicle may go into a limp mode where performance is severely limited.
BMW DTC P1573 causes
The common causes of the DTC P1573 on BMW vehicles include a faulty camshaft position actuator, damaged wiring or connectors in the camshaft position actuator circuit, a malfunctioning Electronic Control Module (ECM), or issues with the sensor supply voltage.
BMW DTC P1573 seriousness
While the DTC P1573 may not always result in immediate breakdown or safety hazards, it is important to address this issue promptly to prevent potential engine damage or further complications. Ignoring this fault code can lead to reduced engine performance and efficiency.
How to diagnose DTC P1573 on BMW
To diagnose the DTC P1573 on a BMW, a mechanic would typically start by using a diagnostic scanner to retrieve the fault codes and perform a thorough inspection of the camshaft position actuator, wiring, connectors, and the ECM. Testing the sensor supply voltage and checking for any loose connections or damaged components are essential steps in diagnosing this issue.
How to fix DTC P1573 on BMW
Fixing the DTC P1573 on a BMW may involve replacing the faulty camshaft position actuator, repairing or replacing damaged wiring or connectors, addressing any issues with the ECM, and ensuring the sensor supply voltage is within the specified range. It is recommended to follow the manufacturer’s diagnostic and repair procedures to resolve this fault code effectively.
How to erase DTC P1573 on BMW
Once the underlying issue causing the DTC P1573 on a BMW has been identified and fixed, the fault code can be erased using a diagnostic scanner. By clearing the fault code, the ECM will no longer register the fault, provided the issue has been successfully resolved.
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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