P0330 OBD-II Trouble Code: Knock Sensor 2 Circuit Malfunction (Bank 2)

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P0330 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0330 code

P0330 is a diagnostic trouble code (DTC) for "Knock Sensor 2 Circuit Malfunction (Bank 2)". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$70.00$30.00
Toyota$70.00$30.00
BMW$70.00$30.00
SCHEDULE P0330 DIAGNOSTIC Get a fair and transparent estimate upfront

Check Engine Light

P0330 code definition

P0330 is a general OBD-II trouble code that is indicating a malfunction in the knock sensor circuit 2.

Note: This code is also related to codes P0325, P0326, P0327, P0328, P0329, P0331, P0332, P0333, and P0334.

What the P0330 code means

P0330 is a DTC that is set when a malfunction is detected in the knock sensor 2 circuit that causes it to not operate properly.

Once the ECU detects the malfunction a Check Engine Light will be displayed on the dashboard. The Check Engine Light will remain until the code is cleared or the vehicle is repaired.

What causes the P0330 code?

  • ECU that has failed
  • Faulty knock sensor 2
  • Poor electrical connection for the knock sensor harness
  • Excessively lean condition
  • Open or short in knock sensor wiring harness
  • Engine coolant system fault

What are the symptoms of the P0330 code?

  • In some cases, no symptoms will be noticed other than the Check Engine Light being present.

  • Some vehicles may exhibit a loss of engine power or a hesitation under acceleration.

How does a mechanic diagnose the P0330 code?

  • First, the mechanic will install a scan tool into the car’s DLC port and check for any codes present with its associated freeze frame data.

  • Now, all the codes will be cleared and the vehicle test driven under similar conditions to the freeze frame data to duplicate the fault.

  • A visual inspection will be performed for all wiring, damaged components, or apparent damage.

  • The scan tool will be used to see the live data while the vehicle is running to look at the engine coolant temperature and fuel trims to make sure no cooling system or lean faults that are present.

  • Knock sensor operation will then be checked with the scan tool.

  • Lastly the ECU will be tested for any faults present.

Common mistakes when diagnosing the P0330 code

Mistakes are commonly made when the fuel system or coolant system is the cause of the P0330 code not the knock sensor itself. In these cases, the knock sensor is often replaced without the malfunction going away.

To avoid this, all diagnostic steps must be followed for proper diagnosis.

How serious is the P0330 code?

P0330 does not usually have any driveability concerns associated with it. This code should not prevent vehicle operation or driving to a safe location after the Check Engine Light is seen. However, P0330 will cause the vehicle to fail OBD-II based emission testing in many states.

What repairs can fix the P0330 code?

  • Knock sensor replacement
  • Faulty ECU replacement
  • Open or short in wiring harness repaired or replaced
  • Fixing connection issues
  • Resolving engine coolant system faults
  • Lean condition repair

Additional comments for consideration regarding the P0330 code

An advanced level scan tool is important for diagnosing the P0330 code. To accurately and quickly diagnose this code, access to the vehicle's live data stream if required. The live data stream lets technicians view the voltage, proper operation, resistance, and many other items that are not available with a standard scan tool.

Need help with a P0330 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

trouble codes
P0330
Check Engine Light

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P0330 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.5/5

Number of Reviews

3,484

Rating Summary
3,176
153
40
23
92
3,176
153
40
23
92

Richard

10 years of experience
415 reviews
Richard
10 years of experience
This is the second time I’ve had Richard work on my car. He always does an outstanding job and is quick, knowledgeable and professional. Highly recommended!!
2012 DODGE CHALLENGER - CHECK ENGINE LIGHT IS ON - LAS VEGAS, NEVADA

Michael

13 years of experience
372 reviews
Michael
13 years of experience
Mike was an absolute professional when he arrived. He walked me thru the whole process of my repairs and also made good recommendations for preventive issues. His mechanical knowledge and good customer services was a breath of air and greatly appreciated :-)
2007 CHEVROLET AVALANCHE - CHECK ENGINE LIGHT IS ON INSPECTION - MARIETTA, GEORGIA

Rodrigo

10 years of experience
85 reviews
Rodrigo
10 years of experience
Rodrigo was exactly on time, very professional and friendly. He assessed my car, let me know the exact problem when a previous mechanic from a shop in my area was unable to. I felt he was very honest and sincere letting me know the level of urgency that I deal with the issue. Absolutely no pressure. I will absolutely use Rodrigo the next time I need anything to do with my car and will tell everyone about him. This is such a great service, I will never go to another mechanic again. It is so convenient. I couldn’t be happier. :)
2013 SMART FORTWO - CHECK ENGINE LIGHT IS ON - LAS VEGAS, NEVADA

Ricardo

8 years of experience
223 reviews
Ricardo
8 years of experience
Great service and was very helpful on what maintenance my vehicle needed and what to expect in the future. Would definitely recommend to anyone and will.
2004 MITSUBISHI LANCER - CHECK ENGINE LIGHT IS ON - LOS ANGELES, CALIFORNIA

More related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...

Related questions

Q: Bad Ignition/electrical issue - takes several cranks before it starts!

Hello there, you have a few different faults going on with your 2007 Chevrolet Impala. A vehicle should not have to crank long before it starts unless there is a fault. Given the codes you have listed there are a...

Q: Engine light with code P0330 knock sensor 2

Hi there. The code you are getting is for a knock sensor problem. Most of the time, if the engine is running good, this is due to a bad connector on the sensor or the sensor itself. I would typically...

Q: I have a lighting bolt icon on my dashboard

When you overheated the engine the check engine light came on most likely for the engine is hot and the lightning bolt comes on indicating the throttle limit control is on. This means the engine is in failure mode and...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com