P0332 Chevrolet Code - Knock Sensor Circuit Low Voltage Bank 2
Quick Answer
The Knock Sensor system enables the Engine Control Module (ECM) to control the ignition timing for the best possible performance while protecting the engine from potentially damaging levels of detonation, also known as spark knock. Common causes include Faulty Knock Sensor Bank 2, Knock Sensor Bank 2 circuit poor electrical connection, Knock Sensor Bank 2 harness is open or shorted. 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
- P0332 Chevrolet indicates Knock Sensor Circuit Low Voltage Bank 2.
- Common causes
- Common causes include Faulty Knock Sensor Bank 2, Knock Sensor Bank 2 circuit poor electrical connection, Knock Sensor Bank 2 harness is open or shorted.
- 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.
Code P0332 Chevrolet Description
The control module learns a minimum noise level, or background noise, at idle from the knock sensor and uses calibrated values for the rest of the RPM range. The control module uses the minimum noise level to calculate a noise channel. A normal knock sensor signal will ride within the noise channel. As engine speed and load change, the noise channel upper and lower parameters will change to accommodate the normal knock sensor signal, keeping the signal within the channel. In order to determine which cylinders are knocking, the control module only uses knock sensor signal information when each cylinder is near the Top Dead Center (TDC) of the firing stroke. If a knock is present, the signal will range outside of the noise channel.
If the control module has determined that a knock is present, it will retard the ignition timing to attempt to eliminate the knock. The control module will always try to work back to a zero-compensation level, or no spark retard. An abnormal knock sensor signal will stay outside of the noise channel or will not be present. knock sensor diagnostics are calibrated to detect faults with the knock sensor circuitry inside the control module, the knock sensor wiring, or the knock sensor voltage output. Some diagnostics are also calibrated to detect constant noise from an outside influence such as a loose/damaged component or excessive engine mechanical noise.
The Diagnostic Trouble Code (DTC) will be set when the signal from the Knock Sensor Bank 1 is short to ground for greater than 5s.
What are the Possible Causes of the DTC P0332 Chevrolet?
- Faulty Knock Sensor Bank 2
- Knock Sensor Bank 2 circuit poor electrical connection
- Knock Sensor Bank 2 harness is open or shorted
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0332 Chevrolet?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0332 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Chevrolet Models
- P0332 2014 Chevrolet Silverado — Knock Sensor Circuit Low Voltage Bank 2
- P0332 2015 Chevrolet Silverado — Knock Sensor Circuit Low Voltage Bank 2
- P0332 2016 Chevrolet Silverado — Knock Sensor Circuit Low Voltage Bank 2
- P0332 2017 Chevrolet Silverado — Knock Sensor Circuit Low Voltage Bank 2
- P0332 2018 Chevrolet Silverado — Knock Sensor Circuit Low Voltage Bank 2
Frequently Asked Questions about P0332 Chevrolet Code
1. What are the common symptoms of OBDII code P0332 (Knock Sensor Circuit Low Voltage Bank 2) in a Chevrolet vehicle?
- Common symptoms include reduced engine power, hesitation or jerking during acceleration, engine knocking or pinging noises, and illuminated Check Engine Light.
2. What are the possible causes of OBDII code P0332 in a Chevrolet related to the knock sensor circuit low voltage on Bank 2?
- Possible causes include a faulty knock sensor, damaged wiring or connectors in the knock sensor circuit, low engine oil level, or issues with the engine control module.
3. How does a low voltage condition on the knock sensor circuit affect the performance of a Chevrolet vehicle?
- A low voltage condition on the knock sensor circuit can cause the engine to run inefficiently, leading to reduced fuel economy, poor acceleration, and potential engine damage due to detonation.
4. Can driving with OBDII code P0332 (Knock Sensor Circuit Low Voltage Bank 2) in a Chevrolet cause further damage to the vehicle?
- Continuing to drive with this code may result in decreased engine performance and potential long-term damage if the underlying issue is not addressed promptly.
5. What are some DIY repair tips for addressing OBDII code P0332 in a Chevrolet?
- DIY repair tips may include checking and repairing damaged wiring or connectors in the knock sensor circuit, ensuring the knock sensor is securely connected, and verifying the engine oil level is adequate.
6. Is it safe to continue driving a Chevrolet vehicle with a malfunctioning knock sensor triggering code P0332?
- It is not recommended to drive a vehicle with a malfunctioning knock sensor, as it can lead to engine performance issues and potential damage. It's best to address the issue as soon as possible.
7. How can a mechanic diagnose the root cause of OBDII code P0332 in a Chevrolet?
- A mechanic can use a scan tool to retrieve the trouble codes, perform a visual inspection of the knock sensor and its wiring, conduct voltage tests on the sensor, and check the engine control module for any faults.
8. Will resetting the Check Engine Light clear OBDII code P0332 in a Chevrolet?
- Resetting the Check Engine Light may temporarily clear the code, but if the underlying issue causing the code is not fixed, the code is likely to reappear after driving the vehicle.
9. Can extreme weather conditions affect the knock sensor circuit and trigger code P0332 in a Chevrolet?
- Extreme weather conditions, such as extreme heat or cold, can potentially affect the knock sensor circuit and trigger code P0332 due to changes in sensor resistance or wiring integrity.
10. How much does it cost to repair OBDII code P0332 (Knock Sensor Circuit Low Voltage Bank 2) in a Chevrolet at a repair shop?
- Repair costs can vary depending on the exact cause of the issue, but generally, the cost of parts and labor for repairing the knock sensor circuit can range from $200 to $500 at a repair shop.
Discuss the causes and fixes for P0332 Chevrolet OBDII Code
-
2000 suburban 2500LT 6.0L 4x4
i replaced both nock sensor, wire harnes, intake manifold gaskets and bolts. Due to the nock sensor 2 error message, then after that I got the nock sensor 1 error code. I Took everything apart aapart and replace everthing again and the nock sensor 2 came back .
Thanks for the help
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