P0333 Scion Code - Knock Sensor 2 Circuit High Input
Quick Answer
The P0333 diagnostic trouble code (DTC) for Scion vehicles specifically relates to the Knock Sensor 2 Circuit High Input. Common causes include Faulty knock sensor, Damaged or corroded wiring harness connecting the knock sensor to the ECM, Engine mechanical issues causing abnormal knocking. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0333 Scion indicates Knock Sensor 2 Circuit High Input.
- Common causes
- Common causes include Faulty knock sensor, Damaged or corroded wiring harness connecting the knock sensor to the ECM, Engine mechanical issues causing abnormal knocking.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P0333 Scion Description
The P0333 diagnostic trouble code (DTC) for Scion vehicles specifically relates to the Knock Sensor 2 Circuit High Input. The knock sensor's primary function is to detect abnormal engine noises caused by detonation, or knocking, in the combustion chamber. When the knock sensor detects these noises, it sends a signal to the engine control module (ECM) to adjust the ignition timing accordingly to prevent engine damage and maintain optimal performance.
Common Causes of P0333 Scion
- Faulty knock sensor
- Damaged or corroded wiring harness connecting the knock sensor to the ECM
- Engine mechanical issues causing abnormal knocking
- Issues with the ECM itself
- Poor quality fuel causing detonation
Symptoms of P0333 Scion
- Decreased fuel efficiency
- Rough idling or vibrations while driving
- Reduced engine power or acceleration
- Engine misfires
- Illumination of the check engine light
How to Fix P0333 Scion
- Begin by conducting a thorough inspection of the knock sensor and its wiring harness for any visible damage or corrosion.
- Test the knock sensor using a digital multimeter to check for proper voltage output.
- If the knock sensor is found to be faulty, replace it with a new OEM (original equipment manufacturer) sensor.
- Repair or replace any damaged wiring connecting the knock sensor to the ECM.
- Clear the DTC codes from the ECM using an OBD-II scanner and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0333 Scion
The typical repair costs for addressing a Knock Sensor 2 Circuit High Input code in a Scion vehicle can range from $150 to $400, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. Rates may be higher at dealerships or in metropolitan areas, while independent shops often charge lower rates. It's advisable to obtain quotes from multiple reputable shops to get a more accurate estimate for the repair.
Tech Notes for P0333 Scion
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