C1334
Sensor 3 Fault
C1334 is an OBD-II diagnostic trouble code meaning: Sensor 3 Fault. Common causes: open or short circuit in the sensor wiring harness, malfunction of the sensor itself. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Incorrect operation of the system to which the sensor belongs
- Reduced braking efficiency (if the sensor belongs to the brake system)
Causes
- Open or short circuit in the sensor wiring harness
- Malfunction of the sensor itself
- Problems with connecting the sensor (oxidation of contacts, poor contact)
- Malfunction of the control unit associated with the sensor
How to Fix
- Carry out diagnostics to accurately determine the system to which the sensor belongs
- Check the integrity of the wiring harness and sensor contacts
- Replace the sensor if it is faulty
- Clean or replace connectors if contact problems are found
- Check and, if necessary, replace the control unit
Related codes
FAQ
What does the C1334 code mean?
C1334 is an OBD-II diagnostic trouble code that indicates: Sensor 3 Fault
What causes a C1334 error code?
The most common causes of C1334 include: Open or short circuit in the sensor wiring harness; Malfunction of the sensor itself; Problems with connecting the sensor (oxidation of contacts, poor contact); Malfunction of the control unit associated with the sensor.
How do I fix a C1334 diagnostic trouble code?
To fix C1334: Carry out diagnostics to accurately determine the system to which the sensor belongs. Check the integrity of the wiring harness and sensor contacts. Replace the sensor if it is faulty. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C1334?
Do not drive — repair immediately
How much does it cost to fix C1334?
The estimated repair cost for C1334 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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