OBD Guide
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P1322

Knock Sensor 3 Signal Too High

P1322 is an OBD-II diagnostic trouble code meaning: Knock Sensor 3 Signal Too High. Common causes: knock sensor 3 malfunction, damage to the wiring or sensor connector. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Reduced engine power
  • Increased fuel consumption
  • The engine is unstable
  • Check Engine light comes on
  • Possible detonation knocks

Causes

  • Knock sensor 3 malfunction
  • Damage to the wiring or sensor connector
  • Sensor Grounding Problems
  • Mechanical problems in the engine
  • Engine control unit (ECU) malfunction

How to Fix

  1. Check the condition of knock sensor 3
  2. Inspect the sensor wiring and connectors
  3. Check sensor grounding
  4. Diagnose the engine for mechanical problems
  5. If necessary, replace knock sensor 3

Related codes

P0325P0326P0327

Error P1322 by Vehicle Brand

BuickCadillacChevroletChryslerGMGMCOldsmobileSaturnVolkswagen

FAQ

What does the P1322 code mean?

P1322 is an OBD-II diagnostic trouble code that indicates: Knock Sensor 3 Signal Too High

What causes a P1322 error code?

The most common causes of P1322 include: Knock sensor 3 malfunction; Damage to the wiring or sensor connector; Sensor Grounding Problems; Mechanical problems in the engine.

How do I fix a P1322 diagnostic trouble code?

To fix P1322: Check the condition of knock sensor 3. Inspect the sensor wiring and connectors. Check sensor grounding. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1322?

Yes, but get it checked soon

How much does it cost to fix P1322?

The estimated repair cost for P1322 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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