P3042
Hybrid/EV Battery Interface Control Module 12 Processor Performance
P3042 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Interface Control Module 12 Processor Performance. Common causes: control module processor internal failure, overheating of electronic components. Estimated repair cost: $278–889.
Symptoms
- Check Engine light comes on
- Hybrid system power reduction
- The vehicle goes into emergency mode
- Inability to charge high voltage battery
- Error messages on the dashboard
Causes
- Control Module Processor Internal Failure
- Overheating of electronic components
- Damage to the module firmware
- Module power problems
- Short circuit in control circuits
How to Fix
- Diagnostics of the control module using a scanner
- Checking the integrity of wiring harnesses and connections
- Updating the module firmware (if possible)
- Replacing the Battery Interface Control Module
- Repair only from an authorized dealer
Related codes
FAQ
What does the P3042 code mean?
P3042 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Interface Control Module 12 Processor Performance
What causes a P3042 error code?
The most common causes of P3042 include: Control Module Processor Internal Failure; Overheating of electronic components; Damage to the module firmware; Module power problems.
How do I fix a P3042 diagnostic trouble code?
To fix P3042: Diagnostics of the control module using a scanner. Checking the integrity of wiring harnesses and connections. Updating the module firmware (if possible). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P3042?
Limited driving only, diagnose soon
How much does it cost to fix P3042?
The estimated repair cost for P3042 is $278–889. Actual cost depends on your vehicle, location, and labor rates.
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