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IgnitionModerate✅ DIY Friendly

P0333

Knock Sensor 2 Circuit High Input Bank 2

The Bank 2 knock sensor is reading a higher signal than expected.

SeverityModerate
CategoryIgnition
Est. Repair Cost$120-$300
Code TypePowertrain
DIY RepairYes

⚡ Common Causes

⚠️ Symptoms

✅ How to Fix — Step by Step

  • Step 1:Inspect wiring for shorts
  • Step 2:Test sensor output
  • Step 3:Rule out mechanical engine noise
  • Step 4:Replace sensor if faulty
💡 Pro Tip: Rule out actual engine knock (rod bearing wear) before replacing the sensor - a genuinely noisy engine can trigger a real high-input reading.

Repair Cost Estimate

Full Repair Estimate
$120-$300
DIY Possible?
YES
Severity
Moderate

Frequently Asked Questions

What does OBD2 code P0333 mean?+
P0333 stands for Knock Sensor 2 Circuit High Input Bank 2. The Bank 2 knock sensor is reading a higher signal than expected.
What causes code P0333?+
Faulty knock sensor; Wiring short circuit; Engine mechanical noise (rod knock, etc.)
How do I fix code P0333?+
Inspect wiring for shorts; Test sensor output; Rule out mechanical engine noise; Replace sensor if faulty
How much does it cost to fix P0333?+
Estimated repair cost for P0333 is $120-$300.
Is P0333 DIY-friendly?+
Yes — P0333 is generally DIY-friendly with basic tools.

AI Diagnosis

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