P0332
Fix within a few daysThe engine computer is not receiving a strong enough signal from the knock sensor on Bank 2. Bank 2 is the side of the engine that does not contain cylinder #1.
Code P0332 means the engine computer detects a low signal from the Bank 2 knock sensor. Common causes: Faulty knock sensor (70%), wiring issues (25%). Drivability: Yes, for short trips only. Repair cost: $50-$250 DIY, $300-$800 professional.
Can I Drive With P0332?
Yes, for short trips only
Essential trips under 10 miles, avoid highways and heavy acceleration
Stop driving immediately if: Loud engine knocking sounds, significant loss of power, or any other new warning lights.
Symptoms of P0332
- 1Check Engine Light is on
- 2Reduced engine power or acceleration
- 3Lower fuel economy
- 4Engine pinging or knocking sounds (less common, as the sensor is failing to report it)
Common Causes of P0332
Parts most likely causing this code, ranked by probability
The knock sensor itself has failed internally and is sending a weak or incorrect signal to the engine computer.
70% of P0332 cases are fixed by replacing this part
Damaged, corroded, or loose wiring or connector to the Bank 2 knock sensor prevents the signal from reaching the engine computer correctly.
25% of P0332 cases are fixed by repairing or replacing wiring
A rare internal fault within the engine computer can cause it to misinterpret or fail to process the knock sensor signal.
5% of P0332 cases are fixed by replacing the ECM
Check These First (Before Buying Parts)
- Visually inspect the wiring harness leading to the Bank 2 knock sensor for any signs of rodent damage, chafing, or corrosion.
- Ensure all electrical connectors related to the knock sensor are securely seated and free of debris.
How to Diagnose P0332
- 1Visually inspect the knock sensor and its wiring harness for any obvious damage, fraying, or corrosion.
- 2Use a multimeter to check the resistance of the Bank 2 knock sensor (refer to your vehicle's service manual for specifications).
- 3Check for proper voltage at the knock sensor connector with the engine running, ensuring the wiring is receiving power.
- 4Test the continuity of the wiring from the knock sensor connector back to the engine computer connector.
- 5If all sensor and wiring tests pass, consider professional diagnosis of the engine computer.
P0332 on Popular Vehicles
Toyota Camry
2007-2024On V6 engines, the knock sensors are notoriously located under the intake manifold, requiring significant disassembly for access. Often, the wiring harness to the sensor also degrades.
80% fixed by replacing knock sensor and/or harness
Honda Accord
2003-2024Similar to Toyota V6s, Honda V6 engines often have knock sensors buried under the intake manifold, making replacement a several-hour job. Inspect the sub-harness carefully.
75% fixed by replacing knock sensor and/or harness
Ford F-150
2004-2024On V8 engines, knock sensor location can vary. Some are more accessible on the side of the block, while others may require intake removal. Always check your specific engine configuration.
70% fixed by replacing knock sensor and/or harness
Frequently Asked Questions
What does P0332 mean?
P0332 indicates that your vehicle's engine computer is receiving a signal from the Bank 2 knock sensor that is too low. This sensor detects engine knocking or pinging.
Can I drive with P0332?
Yes, for short trips only. Your engine computer will reduce power and fuel economy to protect the engine, but prolonged driving with actual knocking can cause serious internal damage.
Will P0332 clear itself?
No, P0332 will not clear itself. The underlying issue causing the low signal must be diagnosed and repaired before the code will clear, either automatically after several drive cycles or by using a scan tool.
How do I fix P0332 myself?
Start by inspecting the knock sensor wiring for damage. If the wiring is good, you will likely need to replace the Bank 2 knock sensor. This often involves removing the intake manifold on V6 and V8 engines.
How much does it cost to fix P0332?
DIY repair costs range from $50-$250 for the knock sensor and intake gaskets. Professional repair costs typically range from $300-$800, with most of the cost being labor due to the sensor's location.
P0332 keeps coming back - why?
If P0332 keeps returning, it's often due to a poor electrical connection that was missed, a faulty replacement sensor, or an underlying issue with the wiring harness that wasn't fully repaired. Rarely, it can point to an ECM problem.
Will P0332 fail emissions/smog test?
Yes, P0332 will cause your vehicle to fail an emissions or smog test. The Check Engine Light being on is an automatic failure in most jurisdictions.
What's the difference between P0332 and P0330?
P0332 specifically indicates a 'low input' from the Bank 2 knock sensor, meaning the signal is too weak. P0330 is a more general code for a 'malfunction' in the Bank 2 knock sensor circuit, which could include low input, high input, or no signal at all.
P0332 on Toyota Camry V6?
On many Toyota Camry V6 models, the knock sensors are located under the intake manifold, making replacement a labor-intensive job. It's a common failure point for these engines.
Questions to Ask Your Mechanic
Did you check the resistance of the knock sensor itself, and not just for voltage at the connector?
Good answer: Yes, I measured the resistance of the Bank 2 knock sensor and it was outside the manufacturer's specified range, indicating an internal failure.
What did you find when inspecting the wiring harness to the Bank 2 knock sensor?
Good answer: I found some chafing on the wiring near the sensor, or corrosion inside the connector, which was causing the low signal.
Repair Cost Estimate
DIY Repair
Parts only
$50-$250
Shop Repair
Parts + labor
$300-$800
Save $250-$550 by doing it yourself
Difficulty
intermediate
Time
2-5 hours
Intermediate - Requires basic mechanical skills, a multimeter for testing, and potentially the ability to remove an intake manifold. Professional recommended if you are not comfortable with engine disassembly.
Cost of Waiting
Ignoring P0332 means your engine's computer cannot properly detect harmful knocking. This forces the engine to run in a 'safe mode' with reduced power and fuel economy. If actual engine knocking occurs and goes undetected, it can lead to severe internal engine damage, turning a $50-$250 sensor replacement into a $3,000-$6,000 engine rebuild or replacement.
While You're In There...
If the knock sensor is located under the intake manifold, these gaskets must be replaced whenever the manifold is removed to prevent vacuum leaks.
If the intake manifold is already off and your spark plugs are due for replacement, it's a good time to change them as access is significantly improved.
On some engines, the PCV valve is located under or near the intake manifold, making it easy to replace while the manifold is off.
Tools You'll Need
- OBD-II scan tool
- Socket set
- Wrenches
- Torque wrench
- Multimeter
- Screwdrivers
- Gasket scraper
- Shop rags
P0332 is a common sensor code, especially on V6 and V8 engines. While the repair can be labor-intensive, replacing the knock sensor will restore your engine's performance and protection.
- Family-owned since 1957
- 990,000+ happy customers
- Fast nationwide shipping
- Easy returns
Your Next Steps
Step 1: Carefully inspect the wiring and connector for the Bank 2 knock sensor. Look for any cuts, frays, or corrosion. Repair any damage found.
Step 2: If the wiring looks good, use a multimeter to test the resistance of the Bank 2 knock sensor. Compare your reading to the specifications in your vehicle's service manual.
Step 3: If the sensor resistance is out of spec, or if you find no wiring issues, plan to replace the Bank 2 knock sensor. You will likely need a new intake manifold gasket set as well.