P1C89 – BMW DTC

BMW DTC P1C89 – Universal Charger Extension Control Module AC Charger Temperature Sensor Circuit Temperature Out of Range High

DTC P1C89 meaning on BMW

DTC P1C89 on a BMW refers to the Universal Charger Extension Control Module AC Charger Temperature Sensor Circuit Temperature Out of Range High. This diagnostic trouble code indicates that the temperature sensor circuit for the AC charger in the Universal Charger Extension Control Module is detecting a temperature reading that is higher than the specified range.

BMW DTC P1C89 symptoms

Symptoms of BMW DTC P1C89 may include:

• Check Engine Light illuminated on the dashboard
• Reduced charging efficiency for the vehicle’s battery
• Possible overheating of the AC charger

BMW DTC P1C89 causes

Common causes of BMW DTC P1C89 include:

• Malfunctioning temperature sensor in the AC charger
• Wiring issues or poor connections in the temperature sensor circuit
• Faulty Universal Charger Extension Control Module

BMW DTC P1C89 seriousness

While BMW DTC P1C89 may not directly affect the drivability of the vehicle, it is important to address this issue promptly to prevent potential damage to the charging system and ensure proper charging of the vehicle’s battery.

How to diagnose DTC P1C89 on BMW

To diagnose DTC P1C89 on a BMW, a mechanic may perform the following steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s computer
2. Inspect the wiring and connections in the AC charger temperature sensor circuit
3. Test the temperature sensor for proper operation
4. Check the Universal Charger Extension Control Module for any faults

How to fix DTC P1C89 on BMW

To fix BMW DTC P1C89, the following steps may be taken:

1. Replace the faulty temperature sensor in the AC charger
2. Repair any damaged wiring or connections in the temperature sensor circuit
3. If the Universal Charger Extension Control Module is faulty, replace it with a new unit
4. Clear the fault codes using a diagnostic scanner after the repairs have been completed

How to erase DTC P1C89 on BMW

To erase DTC P1C89 on a BMW, follow these steps:

1. Ensure that the underlying issue causing the fault code has been resolved
2. Use a diagnostic scanner to clear the fault codes from the vehicle’s computer
3. Perform a test drive to confirm that the Check Engine Light does not reappear

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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