P0326 OBD-II Trouble Code: Knock Sensor Range/Performance (Bank 1 or Single Sensor)

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

SCHEDULE P0326 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0326 code

P0326 is a diagnostic trouble code (DTC) for "Knock Sensor Range/Performance (Bank 1 or Single Sensor)". 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 P0326 DIAGNOSTIC Get a fair and transparent estimate upfront

check engine light logo

P0326 code definition

Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor)

What the P0326 code means

The P0326 code means that the Engine Control Module (ECM) has detected a reference voltage from the knock sensor that has fallen outside the threshold of acceptance set by the manufacturer.

The knock sensor’s job is to inform the ECM of any abnormal engine noises that may be occurring, such as spark knock.

What are the causes of the P0326 code?

This code is sometimes accompanied by other codes, and it is important to address these other issues first. If no other engine issues exist but a P0326 code is still present, some potential causes of the P0326 code may include:

  • Damaged wiring or connectors associated with the knock sensor
  • A faulty knock sensor
  • A connector that has come unplugged
  • A faulty ECM

What are the symptoms of the P0326 code?

  • Loss of power
  • Hesitation upon acceleration
  • Spark knock
  • Check Engine Light illumination
  • Abnormal engine noise

How does a mechanic diagnose the P0326 code?

If this code is accompanied by any other trouble codes, the mechanic would resolve those issues first. If no other issues exist, the mechanic would visually inspect the knock sensor to ensure that it is plugged in, the wiring is not damaged, and that is is functioning properly.

To ensure the functionality of the knock sensor, the mechanic may test it with a digital multimeter using the manufacturer’s recommended procedure. If any issues are found during this test, the faulty parts would be replaced at the customer’s request.

If no issues were found, the ECM would be tested next and replaced if necessary.

Common mistakes when diagnosing the P0326 code

This is a code where it is easy to misdiagnose the problem due to the fact that a particular part is mentioned in the trouble code itself. If this code is stored in your vehicle, do not just replace the knock sensor. Ensure that the sensor is malfunctioning before replacing it.

How serious is the P0326 code?

If other codes are associated with this code, it can be more serious than if this code were set by itself. The other codes that may cause this code to pop up can cause very serious drivability issues and may cause the engine not to run at all. If the P0326 code is stored by itself, it is likely that the driver can drive on it for a short time before having the issue resolved.

What repairs can fix the P0326 code?

  • Replacing the knock sensor
  • Repairing or replacing any wiring or connectors that are associated with the knock sensor.
  • Plugging the knock sensor back in
  • Replacing the Engine Control Module

Additional comments regarding the P0326 code?

Spark knock can be very loud and is usually immediately noticeable to the driver. If the engine in your vehicle starts to sound abnormal while it is running, be sure to have the issue resolved as soon as possible to prevent any further engine damage.

Need help with a P0326 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
Check Engine Light
P0326

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

SCHEDULE P0326 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

3,696

Rating Summary
3,372
162
42
24
96
3,372
162
42
24
96

Kinder

18 years of experience
40 reviews
Kinder
18 years of experience
Great guy. Called before arriving. Very knowledgeable. Gave me great service and helped my baby get better.
2005 CHRYSLER CROSSFIRE - CHECK ENGINE LIGHT IS ON - ATLANTA, GEORGIA

Diego

18 years of experience
223 reviews
Diego
18 years of experience
Very professional. He explained what the problem may be and then confirmed it after testing the coil. I would definitely call him again and would recommend him to friends and family
2000 LEXUS ES300 - CHECK ENGINE LIGHT IS ON - SURPRISE, ARIZONA

Peter

40 years of experience
1059 reviews
Peter
40 years of experience
Peter is a highly skilled technician that knows his stuff. He was able to diagnose an issue I was having with my vehicle quickly and accurately. Peter will be my go to guy for all of my future car needs.
1997 FORD F-250 - CHECK ENGINE LIGHT IS ON - PHOENIX, ARIZONA

Rusty

20 years of experience
263 reviews
Rusty
20 years of experience
Showed up on time and gave a thorough explanation of work that needed to be done
2007 CHEVROLET AVALANCHE - CHECK ENGINE LIGHT IS ON - ARLINGTON, TEXAS

More related articles

P0121 OBD-II Trouble Code: TPS "A" Circuit Range Performance Problem
P0121 code definition Throttle Pedal Position Sensor/Switch (TPS) A Circuit Range Performance Problem...
How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...
The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Shutterstock.com Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....

Related questions

Q: How long and what is the process to replace a fuel pressure sensor?

A professional mechanic would require roughly 5 hours. (If just the regulator is replaced that takes about 1 hour). Some parts, as noted below, cannot be re-used, you need a precision inch pound torque wrench, FSM instructions (and TSB updates...

Q: DPF light, traction and engine lights flashing, car has no pulling power, dense blue/black smoke on each start.

Based on the information you provided, it is possible that a failed seal in the turbo is allowing engine oil into the intake. The result would be increases carbon buildup on your DPF (Diesel Particulate Filter). Usually a flashing Check...

Q: Could a problem with the knock sensor keep my car from starting?

Hi there. A problem with the knock sensor or knock sensor circuit can definitely make starting a vehicle more difficult. A knock sensor is used by engineers to help the engine's computer sense possible internal engine failure before it becomes...

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