U1055
Invalid or Missing Data For Primary Id
U1055 is an OBD-II diagnostic trouble code meaning: Invalid or Missing Data For Primary Id. Common causes: damage to the can bus wiring harness, corrosion or oxidation of contacts in connectors. Estimated repair cost: $6–167.
Symptoms
- Check Engine Light Is On
- Malfunction of related systems (suspension, transmission, etc.)
- Incorrect instrument readings
- Problems starting the engine
- Loss of power or decrease in dynamics
Causes
- Damage to the CAN bus wiring harness
- Corrosion or oxidation of contacts in connectors
- Malfunction of one of the electronic modules
- Problems with module power supply
- Software errors in the data transmission module
How to Fix
- Check the integrity of the CAN bus wiring harness
- Clean contacts in module connectors
- Check power and ground on the problematic module
- Read error codes from other modules for diagnostics
- Update module software (if necessary)
Related codes
FAQ
What does the U1055 code mean?
U1055 is an OBD-II diagnostic trouble code that indicates: Invalid or Missing Data For Primary Id
What causes a U1055 error code?
The most common causes of U1055 include: Damage to the CAN bus wiring harness; Corrosion or oxidation of contacts in connectors; Malfunction of one of the electronic modules; Problems with module power supply.
How do I fix a U1055 diagnostic trouble code?
To fix U1055: Check the integrity of the CAN bus wiring harness. Clean contacts in module connectors. Check power and ground on the problematic module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1055?
Limited driving only, diagnose soon
How much does it cost to fix U1055?
The estimated repair cost for U1055 is $6–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat