P0328

Medium Severity

Knock Sensor 1 Circuit High (Bank 1)

Ignition System

What Does P0328 Mean?

Knock sensor signal is too high. Could be a noisy engine or a sensor fault.

Common Fix

Replace knock sensor or fix engine noise

Estimated Cost (DIY)

$20 - $400

Symptoms

  • ⚠️Excessive timing retard
  • ⚠️Loss of power
  • ⚠️Check engine light

Related Symptoms

Check engine light on

Common Causes

Engine mechanical noise being misreadlikely
Faulty sensorpossible
Short in wiringpossible

How to Diagnose P0328

  1. 1Listen for engine mechanical noises
  2. 2Check for exhaust leak near sensor
  3. 3Replace sensor if no mechanical issue found

OEM Diagnostic Flowchart

Scroll to load technician if/then branches.

Read live data and freeze frame for P0328 to pinpoint the cause before buying parts.

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Related Resources

Repair guides, symptom pages, and wiring diagrams related to P0328.

OEM Manual Evidence

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2013 GMC Truck Yukon XL Denali AWD V8-6.2L A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Yukon XL Denali AWD V8-6.2L Service Manual | Operation CHARM Operation CHARM : Car...

2013 GMC Truck Yukon XL Denali 2WD V8-6.2L A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Yukon XL Denali 2WD V8-6.2L Service Manual | Operation CHARM Operation CHARM : Car...

2013 GMC Truck Yukon XL 4WD V8-6.0L A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Yukon XL 4WD V8-6.0L Service Manual | Operation CHARM Operation CHARM : Car repair...

2013 GMC Truck Yukon XL 4WD V8-5.3L A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Yukon XL 4WD V8-5.3L Service Manual | Operation CHARM Operation CHARM : Car repair...

Related Symptoms

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Check engine light onSymptom Hub

A check-engine light is a graph entry point into code pages, symptom-specific diagnosis, and the exact repair categories most often associated with those failures.

Exact Vehicle Hubs

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2013 Gmc Truck Yukon Xl 4wd V8 5.3l Repair HubManual

Open the exact vehicle hub grounded by OEM manual evidence related to P0328.

2013 Gmc Truck Yukon Xl 4wd V8 6.0l Repair HubManual

Open the exact vehicle hub grounded by OEM manual evidence related to P0328.

2013 Gmc Truck Yukon Xl Denali 2wd V8 6.2l Repair HubManual

Open the exact vehicle hub grounded by OEM manual evidence related to P0328.

2013 Gmc Truck Yukon Xl Denali Awd V8 6.2l Repair HubManual

Open the exact vehicle hub grounded by OEM manual evidence related to P0328.

Related Codes

P0325: Knock Sensor 1 Circuit (Bank 1)Related

The knock sensor on bank 1 has a circuit fault. Without it, the ECM cannot detect engine knock (detonation) and must retard ignition timing for safety.

P0327: Knock Sensor 1 Circuit Low (Bank 1)Related

Knock sensor signal is below expected minimum. Usually an open circuit or failed sensor.

Frequently Asked Questions

Can an exhaust leak cause P0328?
Yes — an exhaust leak near the knock sensor can create vibrations that the sensor interprets as knock.
What if P0328 comes back after replacing the sensor?
There may be actual engine knock from carbon buildup, low octane fuel, or a mechanical problem causing excessive vibration.

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