P0333 Code - Knock Sensor Circuit High Voltage Bank 2
Quick Answer
The P0333 diagnostic trouble code (DTC) indicates that the knock sensor circuit for Bank 2 is registering a high voltage. Common causes include Faulty knock sensor, Damaged or corroded wiring connecting the knock sensor to the ECM, ECM malfunction. 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 indicates Knock Sensor Circuit High Voltage Bank 2.
- Common causes
- Common causes include Faulty knock sensor, Damaged or corroded wiring connecting the knock sensor to the ECM, ECM malfunction.
- 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 Description
The P0333 diagnostic trouble code (DTC) indicates that the knock sensor circuit for Bank 2 is registering a high voltage. The knock sensor is a crucial component that detects engine knock or detonation, which can cause damage to the engine if left unaddressed. When the knock sensor circuit registers a high voltage, it may indicate a fault in the sensor itself, the wiring connecting it to the engine control module (ECM), or issues with the ECM.
Common Causes of P0333
- Faulty knock sensor
- Damaged or corroded wiring connecting the knock sensor to the ECM
- ECM malfunction
- Engine overheating
- Poor quality fuel causing pre-ignition
Symptoms of P0333
- Engine knocking or pinging noises
- Decreased engine performance
- Reduced fuel efficiency
- Illuminated check engine light
- Engine misfires
How to Fix P0333
- Diagnose the issue by using a scan tool to monitor knock sensor readings and inspecting wiring for damage or corrosion.
- Replace the knock sensor if it is faulty.
- Repair or replace damaged wiring connecting the knock sensor to the ECM.
- Test the knock sensor circuit to ensure proper voltage readings.
- Clear the DTC and test drive the vehicle to verify that the issue has been resolved.
Cost to Fix P0333
The cost of repairing a P0333 code can vary depending on the specific cause of the issue. In general, the cost of a new knock sensor ranges from $50 to $200, with labor costs typically adding another $100 to $200. Therefore, the total repair cost could range from $150 to $400. Keep in mind that additional diagnostic time and labor charges may apply, so it's advisable to consult with a trusted mechanic for a more accurate estimate based on your vehicle's make and model.
Tech Notes for P0333
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Code P0333 Information for Specific Makes
- P0333 Audi — Knock Sensor 2 Circuit High
- P0333 Buick — Knock Sensor Circuit High Voltage Bank 2
- P0333 Cadillac — Knock Sensor Circuit High Voltage Bank 2
- P0333 Chevrolet — Knock Sensor Circuit High Voltage Bank 2
- P0333 Ford — Knock Sensor 2 Circuit High Bank 2
- P0333 GMC — Knock Sensor Circuit High Voltage Bank 2
- P0333 Infiniti — Knock Sensor 2 Circuit High Input Bank 2
- P0333 Isuzu — Knock Sensor 2 Circuit High Voltage
- P0333 Jaguar — Knock Sensor 2 Circuit High Bank 2
- P0333 KIA — Knock Sensor 2 Circuit High Input
- P0333 Lexus — Knock Sensor 2 Circuit High Input
- P0333 Mercedes-Benz — Knock/Combustion Vibration Sensor 2 Circuit High Bank 2
- P0333 Mitsubishi — Knock Sensor Circuit High Bank 2
- P0333 Nissan — Knock Sensor 2 Circuit High Input Bank 2
- P0333 Scion — Knock Sensor 2 Circuit High Input
- P0333 Subaru — Knock Sensor 2 Circuit High Input Bank 1 Or Single Sensor
- P0333 Toyota — Knock Sensor 2 Circuit High Input
- P0333 Volkswagen — Knock Sensor 2 Circuit High
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