U301C
Control Module Wake-up Circuit A High
U301C is an OBD-II diagnostic trouble code meaning: Control Module Wake-up Circuit A High. Common causes: short circuit in wake-up circuit, wiring harness damage. Estimated repair cost: $17–111.
Symptoms
- Problems starting the engine
- Spontaneous switching on/off of electronics
- Errors from other systems
- Check Engine Light Is On
Causes
- Short circuit in wake-up circuit
- Wiring harness damage
- Oxidized or corroded contacts
- Control unit malfunction
How to Fix
- Check the integrity of the wake-up circuit wiring
- Check contacts for corrosion
- Measure resistance and voltage in the circuit
- Scan other modules for errors
- If necessary, replace the control unit
Related codes
Error U301C by Vehicle Brand
FAQ
What does the U301C code mean?
U301C is an OBD-II diagnostic trouble code that indicates: Control Module Wake-up Circuit A High
What causes a U301C error code?
The most common causes of U301C include: Short circuit in wake-up circuit; Wiring harness damage; Oxidized or corroded contacts; Control unit malfunction.
How do I fix a U301C diagnostic trouble code?
To fix U301C: Check the integrity of the wake-up circuit wiring. Check contacts for corrosion. Measure resistance and voltage in the circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U301C?
Limited driving only, diagnose soon
How much does it cost to fix U301C?
The estimated repair cost for U301C is $17–111. Actual cost depends on your vehicle, location, and labor rates.
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