P0C90 – BMW DTC

BMW DTC P0C90 – Hybrid/EV Battery Temperature Sensor ‘J’ Circuit High

DTC P0C90 meaning on BMW

DTC P0C90 on a BMW indicates an issue with the Hybrid/EV Battery Temperature Sensor ‘J’ Circuit registering a high voltage. This sensor is responsible for monitoring the temperature of the hybrid or electric vehicle battery pack.

BMW DTC P0C90 symptoms

Symptoms of DTC P0C90 on a BMW may include:

• Check Engine Light illuminated
• Reduced hybrid or electric vehicle performance
• Increased fuel consumption
• Possible overheating of the battery pack

BMW DTC P0C90 causes

The common causes of DTC P0C90 on a BMW are:

• Faulty Hybrid/EV Battery Temperature Sensor ‘J’
• Wiring or connection issues in the sensor circuit
• Software glitches in the hybrid or electric vehicle system

BMW DTC P0C90 seriousness

DTC P0C90 should be addressed promptly as it can lead to potential damage to the hybrid or electric vehicle battery pack. Ignoring this fault may result in reduced efficiency and performance of the vehicle.

How to diagnose DTC P0C90 on BMW

To diagnose DTC P0C90 on a BMW, follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes from the vehicle’s computer.
2. Inspect the Hybrid/EV Battery Temperature Sensor ‘J’ and its wiring for any visible damage or corrosion.
3. Test the sensor’s resistance and voltage output to determine if it is functioning correctly.
4. Check for any software updates or recalibrations that may be required for the hybrid or electric vehicle system.

How to fix DTC P0C90 on BMW

To fix DTC P0C90 on a BMW, consider the following:

1. Replace the faulty Hybrid/EV Battery Temperature Sensor ‘J’ if it is found to be defective.
2. Repair any damaged wiring or connections in the sensor circuit.
3. Perform any necessary software updates or recalibrations to ensure proper functioning of the hybrid or electric vehicle system.

How to erase DTC P0C90 on BMW

To erase DTC P0C90 on a BMW, you can:

1. Use a diagnostic scanner to clear the fault codes stored in the vehicle’s computer.
2. After addressing the underlying issue causing the fault code, reset the system by disconnecting the vehicle’s battery for a few minutes.
3. Ensure that the repair has been successful by driving the vehicle and checking for any recurrence of the fault code.

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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