P1414 – BMW DTC

BMW DTC P1414 – Secondary Air Injection Pump Relay Control Circuit Signal High

DTC P1414 meaning on BMW

The Diagnostic Trouble Code (DTC) P1414 for BMW indicates an issue with the Secondary Air Injection Pump Relay Control Circuit Signal being too high. This code is specific to the secondary air injection system, which is responsible for reducing emissions during cold starts by injecting fresh air into the exhaust system.

BMW DTC P1414 symptoms

Symptoms of DTC P1414 on a BMW may include:

• Check Engine Light (MIL) illuminated
• Reduced engine performance
• In some cases, the vehicle may go into a limp mode

BMW DTC P1414 causes

Common causes of DTC P1414 on a BMW include:

• Faulty secondary air injection pump relay
• Wiring issues in the relay control circuit
• Defective secondary air injection pump

BMW DTC P1414 seriousness

While DTC P1414 may not cause immediate drivability issues, it is important to address this code promptly to ensure proper emission control and overall vehicle performance. Ignoring this code can lead to increased emissions and potential long-term damage to the engine and catalytic converter.

How to diagnose DTC P1414 on BMW

To diagnose DTC P1414 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes
2. Inspect the secondary air injection pump relay and related wiring for any visible damage
3. Test the relay and pump for proper functionality
4. Check for any loose connections or corrosion in the circuit

How to fix DTC P1414 on BMW

To fix DTC P1414 on a BMW, you can consider the following actions:

1. Replace the faulty secondary air injection pump relay
2. Repair or replace any damaged wiring in the relay control circuit
3. If the secondary air injection pump is defective, replace it with a new unit
4. Clear the fault codes and perform a test drive to ensure the issue is resolved

How to erase DTC P1414 on BMW

To erase DTC P1414 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the vehicle’s Engine Control Module (ECM). After fixing the underlying issue causing the code, clearing the codes will reset the Check Engine Light and allow you to monitor the system for any new faults.

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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