Is it safe to drive with a P0325 code?

Severity is medium. Address P0325 sooner rather than later — driving with an active check engine light can worsen the problem or void emissions warranties.

How much does it cost to fix P0325?

Repair costs for P0325 typically range from $80 to $500 in the US, depending on the underlying cause. The most common fix is: Failed knock sensor.

What are the symptoms of P0325?

Check engine light. Reduced power (ECM pulls timing conservatively as a safeguard). Lower fuel economy. Occasional pinging under load.

Check Engine Code

P0325

Knock Sensor 1 Circuit Malfunction (Bank 1)

Severity: medium DIY difficulty: 3/5 Typical cost: $80–$500

What P0325 means

The knock sensor listens for detonation (knock) and tells the ECM to pull timing when it hears it. P0325 sets when the signal is out of range — usually a failed sensor or damaged wiring.

Symptoms

Check engine light
Reduced power (ECM pulls timing conservatively as a safeguard)
Lower fuel economy
Occasional pinging under load

Likely causes (most common first)

Failed knock sensor
Damaged wiring or connector (sensors live in harsh engine bay conditions)
Loose sensor mounting bolt (changes its resonance)
ECM fault (rare)

Can I keep driving?

Medium — drivable but fix soon

Typical repair cost

DIY fixes can start near $80 (parts only). Shop repairs for P0325 typically run up to $500 depending on the underlying cause and vehicle. Start with the most common cause — Failed knock sensor — before throwing parts at it.

Related codes

P0326P0327P0328P0330

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