P0333 2014 GMC Sierra Code - Knock Sensor Circuit High Voltage Bank 2
Quick Answer
The P0333 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the Knock Sensor Circuit High Voltage Bank 2. Common causes include Faulty knock sensor, Damaged wiring harness, Corrosion or poor connection in the sensor circuit. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P0333 2014 GMC Sierra indicates Knock Sensor Circuit High Voltage Bank 2.
- Common causes
- Common causes include Faulty knock sensor, Damaged wiring harness, Corrosion or poor connection in the sensor circuit.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
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Code P0333 2014 GMC Sierra Description
The P0333 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the Knock Sensor Circuit High Voltage Bank 2. The knock sensor is a crucial component in the engine management system that detects abnormal combustion, often referred to as engine knock or pinging. When the knock sensor detects these abnormal combustion events, it sends a signal to the engine control module (ECM) to adjust the ignition timing to prevent engine damage.
Common Causes of P0333 2014 GMC Sierra
- Faulty knock sensor
- Damaged wiring harness
- Corrosion or poor connection in the sensor circuit
- Issues with the ECM
- Engine mechanical problems causing abnormal combustion
Symptoms of P0333 2014 GMC Sierra
- Engine misfires or rough idle
- Decreased fuel efficiency
- Engine knocking or pinging noises
- Check Engine Light illuminated
- Loss of power or acceleration
How to Fix P0333 2014 GMC Sierra
- Begin by diagnosing the knock sensor circuit using a scan tool to confirm the high voltage reading in Bank 2.
- Inspect the wiring harness for any damage, corrosion, or poor connections. Repair or replace as necessary.
- Test the knock sensor using a multimeter to check for proper resistance values. Replace the sensor if it is faulty.
- Clear the DTC and reset the ECM to see if the code returns after repairs.
- Test drive the vehicle to ensure the issue has been resolved and monitor for any recurring symptoms.
Cost to Fix P0333 2014 GMC Sierra
The cost of repairing a Knock Sensor Circuit High Voltage Bank 2 issue on a 2014 GMC Sierra can vary depending on the specific cause of the problem. In general, the cost of a new knock sensor ranges from $50 to $200, while the labor cost for diagnosis and replacement can range from $100 to $300. Overall, the total repair cost can range from $150 to $500. It is important to note that labor rates and part prices can vary significantly based on location, the repair shop's rates, and the specific vehicle make and model. It is recommended to obtain quotes from local auto repair shops for a more accurate estimate.
Tech Notes for P0333 2014 GMC Sierra
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