U1305
High Or Low Voltage On Class 2 Serial Data Circuit
U1305 is an OBD-II diagnostic trouble code meaning: High Or Low Voltage On Class 2 Serial Data Circuit. Common causes: open or short circuit in class 2 circuit, poor contact in connectors. Estimated repair cost: $6–56.
Symptoms
- Incorrect operation of electronic systems
- Check Engine Light Illuminates
- Problems starting the engine
- Loss of communication between modules
Causes
- Open or short circuit in Class 2 circuit
- Poor contact in connectors
- Malfunction of one of the electronic modules
- Wiring harness damage
How to Fix
- Check continuity of Class 2 circuit
- Inspect connectors for oxidation or damage
- Check the voltage in the circuit
- Replace damaged wires or connectors
- If necessary, replace the faulty module
Related codes
FAQ
What does the U1305 code mean?
U1305 is an OBD-II diagnostic trouble code that indicates: High Or Low Voltage On Class 2 Serial Data Circuit
What causes a U1305 error code?
The most common causes of U1305 include: Open or short circuit in Class 2 circuit; Poor contact in connectors; Malfunction of one of the electronic modules; Wiring harness damage.
How do I fix a U1305 diagnostic trouble code?
To fix U1305: Check continuity of Class 2 circuit. Inspect connectors for oxidation or damage. Check the voltage in the circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1305?
Yes, but get it checked soon
How much does it cost to fix U1305?
The estimated repair cost for U1305 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat