P2052 – BMW DTC

BMW DTC P2052 – Reductant Injection Valve Circuit High (Bank 2 Unit 1)

DTC P2052 meaning on BMW

DTC P2052 for BMW refers to a fault with the Reductant Injection Valve Circuit High on Bank 2 Unit 1. This diagnostic trouble code indicates that the engine control module (ECM) has detected an electrical malfunction in the circuit responsible for controlling the reductant injection valve on Bank 2 Unit 1.

BMW DTC P2052 symptoms

Symptoms of DTC P2052 on a BMW may include:

• Check Engine Light (MIL) illuminated
• Reduced engine performance
• Increased fuel consumption
• Possible exhaust system issues

BMW DTC P2052 causes

Common causes of DTC P2052 on a BMW include:

• Faulty reductant injection valve
• Wiring or connector issues in the circuit
• ECM software or hardware problems

BMW DTC P2052 seriousness

While DTC P2052 may not cause immediate drivability issues, it is important to address this fault promptly to prevent potential damage to the vehicle’s emissions system and ensure optimal engine performance.

How to diagnose DTC P2052 on BMW

To diagnose DTC P2052 on a BMW, a mechanic may perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and freeze frame data
2. Inspect the reductant injection valve and its wiring for any visible damage
3. Check the circuit for continuity and proper voltage levels
4. Perform a thorough inspection of the ECM and related components

How to fix DTC P2052 on BMW

To fix DTC P2052 on a BMW, the following steps may be taken:

1. Replace the faulty reductant injection valve if necessary
2. Repair any damaged wiring or connectors in the circuit
3. Update the ECM software if recommended by the manufacturer
4. Clear the fault code and perform a road test to ensure the issue is resolved

How to erase DTC P2052 on BMW

To erase DTC P2052 on a BMW, follow these steps:

1. Use a diagnostic scanner to clear the fault code
2. Perform a battery reset by disconnecting the negative terminal for a few minutes
3. Drive the vehicle to allow the ECM to relearn the system parameters

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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