U1142
Invalid Or Missing Data For Primary Id
U1142 is an OBD-II diagnostic trouble code meaning: Invalid Or Missing Data For Primary Id. Common causes: open or short circuit in the can bus, malfunction of one of the electronic control units. Estimated repair cost: $6–111.
Symptoms
- Check Engine light comes on
- Malfunctions of the car's electronic systems
- Lost connection with diagnostic equipment
- Incorrect dashboard readings
- Reduced engine power
Causes
- Open or short circuit in the CAN bus
- Malfunction of one of the electronic control units
- Damage to connectors or corrosion of contacts
- Software failure in the module
- Problems with power supply to electronic components
How to Fix
- Check the integrity of the CAN bus and connections
- Inspect connectors for damage and corrosion
- Check power supply and ground of electronic modules
- Read error codes from all modules
- Replace damaged components if necessary
Related codes
FAQ
What does the U1142 code mean?
U1142 is an OBD-II diagnostic trouble code that indicates: Invalid Or Missing Data For Primary Id
What causes a U1142 error code?
The most common causes of U1142 include: Open or short circuit in the CAN bus; Malfunction of one of the electronic control units; Damage to connectors or corrosion of contacts; Software failure in the module.
How do I fix a U1142 diagnostic trouble code?
To fix U1142: Check the integrity of the CAN bus and connections. Inspect connectors for damage and corrosion. Check power supply and ground of electronic modules. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1142?
Limited driving only, diagnose soon
How much does it cost to fix U1142?
The estimated repair cost for U1142 is $6–111. Actual cost depends on your vehicle, location, and labor rates.
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