P033E — Knock/Combustion Vibration Sensor D Circuit Intermittent

What Does P033E Mean?

P033E is a diagnostic trouble code indicating: Knock/Combustion Vibration Sensor D Circuit Intermittent. This code relates to the ignition system system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P033E

⚠️ Check Engine Light (MIL) illuminated
⚠️ Knock/Combustion Vibration Sensor D signal cutting in and out
⚠️ Related system working sometimes but not consistently
⚠️ Engine misfires or rough running

Common Causes

🔍 Loose or intermittent connection at Knock/Combustion Vibration Sensor D
🔍 Wire chafing causing intermittent contact
🔍 Knock/Combustion Vibration Sensor D failing under heat or vibration
🔍 Corroded connector pins with partial contact

Frequently Asked Questions

What does P033E mean?

P033E indicates: Knock/Combustion Vibration Sensor D Circuit Intermittent. The vehicle's computer has detected that the Knock/Combustion Vibration Sensor D is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P033E?

Only short distances if absolutely necessary. P033E affects a critical system and should be diagnosed within a few days to avoid further damage.

How much does it cost to fix P033E?

Repair costs for P033E typically range from $30 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect and reseat all Knock/Combustion Vibration Sensor D connectors
🔧 Repair chafed or damaged wiring in Knock/Combustion Vibration Sensor D circuit
🔧 Replace Knock/Combustion Vibration Sensor D if failing intermittently

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P033E: Knock/Combustion Vibration Sensor D Circuit Intermittent