P1466 – BMW DTC

BMW DTC P1466 – Heated Catalyst Power Switch Temperature Sensor Plausibility

DTC P1466 meaning on BMW

The Diagnostic Trouble Code (DTC) P1466 for BMW refers to the Heated Catalyst Power Switch Temperature Sensor Plausibility issue. This code indicates that there is a problem with the temperature sensor related to the heated catalyst power switch system in the vehicle.

BMW DTC P1466 symptoms

Symptoms of the BMW DTC P1466 may include:

• Check Engine Light illuminated on the dashboard
• Reduced engine performance
• Potential increase in emissions

BMW DTC P1466 causes

Common causes of the BMW DTC P1466 may include:

• Defective heated catalyst power switch temperature sensor
• Wiring or connection issues related to the sensor
• Faulty power switch module

BMW DTC P1466 seriousness

The seriousness of the BMW DTC P1466 code lies in the potential impact on the vehicle’s emissions and performance. Ignoring this issue can lead to increased emissions, reduced fuel efficiency, and potential damage to the catalytic converter.

How to diagnose DTC P1466 on BMW

To diagnose the DTC P1466 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes
2. Inspect the heated catalyst power switch temperature sensor and its wiring for any visible damage
3. Check the power switch module for proper operation

How to fix DTC P1466 on BMW

To fix the DTC P1466 on a BMW, you may need to:

1. Replace the faulty heated catalyst power switch temperature sensor
2. Repair or replace any damaged wiring or connections related to the sensor
3. If necessary, replace the power switch module

How to erase DTC P1466 on BMW

To erase the DTC P1466 on a BMW, you can:

1. Use a diagnostic scanner to clear the fault codes
2. After fixing the underlying issue, drive the vehicle to allow the system to retest and verify that the code does not return

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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