BMW DTC P1B87 – Hybrid/EV Battery Voltage Sense ‘K’ Circuit Voltage Implausible High
DTC P1B87 meaning on BMW
DTC P1B87 on a BMW refers to the Hybrid/EV Battery Voltage Sense ‘K’ Circuit Voltage Implausible High. This diagnostic trouble code indicates that there is an issue with the voltage sense circuit for the hybrid or electric vehicle battery, specifically that the voltage reading is abnormally high and implausible.
BMW DTC P1B87 symptoms
Symptoms of DTC P1B87 on a BMW may include:
- Check Engine Light illuminated
- Reduced hybrid or electric vehicle performance
- Decreased fuel efficiency
- Vehicle may go into a reduced power mode
BMW DTC P1B87 causes
Common causes of DTC P1B87 on a BMW include:
- Faulty voltage sensor
- Wiring or connection issues in the voltage sense circuit
- Hybrid or electric vehicle battery issues
- Software glitches or calibration errors
BMW DTC P1B87 seriousness
DTC P1B87 should be addressed promptly as it can affect the performance and efficiency of the hybrid or electric vehicle system. Ignoring this code may lead to further damage to the battery or other components.
How to diagnose DTC P1B87 on BMW
To diagnose DTC P1B87 on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the voltage sensor and its wiring for any visible damage
- Check the hybrid or electric vehicle battery for proper voltage levels
- Perform a software update or calibration if necessary
How to fix DTC P1B87 on BMW
To fix DTC P1B87 on a BMW, the following steps may be taken:
- Replace the faulty voltage sensor if needed
- Repair any damaged wiring or connections in the voltage sense circuit
- Address any issues with the hybrid or electric vehicle battery
- Perform a software update or calibration to correct any programming errors
How to erase DTC P1B87 on BMW
After fixing the underlying issue causing DTC P1B87 on a BMW, the fault code can be erased using a diagnostic scanner. This will clear the code from the vehicle’s memory and turn off the Check Engine Light.
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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