P2C88
Hybrid/EV Battery Voltage System Isolation Warning
P2C88 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Voltage System Isolation Warning. Common causes: damage to the insulation of high-voltage cables, moisture ingress into high voltage components. Estimated repair cost: $56–278.
Symptoms
- The Check Engine light comes on
- A warning message appears on the dashboard
- Reduced performance of the hybrid system
- The car may go into emergency mode
- Possible problems with charging the high-voltage battery
Causes
- Damage to the insulation of high-voltage cables
- Moisture ingress into high voltage components
- Wear of insulating materials
- Damage to the high voltage battery
- Insulation monitoring system malfunction
How to Fix
- Carry out diagnostics of the high-voltage system
- Check the insulation integrity of all high voltage components
- Investigate possible places of moisture penetration
- Replace damaged high voltage cables or components
- Check and, if necessary, replace the insulation monitoring system sensors
Related codes
Error P2C88 by Vehicle Brand
FAQ
What does the P2C88 code mean?
P2C88 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Voltage System Isolation Warning
What causes a P2C88 error code?
The most common causes of P2C88 include: Damage to the insulation of high-voltage cables; Moisture ingress into high voltage components; Wear of insulating materials; Damage to the high voltage battery.
How do I fix a P2C88 diagnostic trouble code?
To fix P2C88: Carry out diagnostics of the high-voltage system. Check the insulation integrity of all high voltage components. Investigate possible places of moisture penetration. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2C88?
Do not drive — repair immediately
How much does it cost to fix P2C88?
The estimated repair cost for P2C88 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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