StopOrDrive

Enter a 5-character code such as P0420, P0301, or P0457.

We don't have that code yet

Codes starting with P are engine and transmission, B are body, C are chassis, and U are network communication. A 0 as the second character means a generic code shared by all makes; a 1 means a manufacturer-specific code, so its meaning depends on your brand.

A steady check engine light usually means get it checked soon. A flashing check engine light means an active misfire: reduce speed and stop driving as soon as it is safe.

That doesn't look like an OBD-II code

A valid code is one letter (P, B, C, or U) followed by four characters, for example P0420.

P0325 Knock sensor 1 circuit (Bank 1)

Can I drive with P0325?

Drive soon

OK to drive for now, but get it fixed within days to a couple of weeks, or the damage and the bill can grow.

The computer loses its protection against engine knock and usually cuts timing, which lowers power and fuel economy.

What does P0325 mean?

The sensor that listens for engine knock (detonation) on bank 1 has an electrical problem.

What causes P0325?

  1. Failed knock sensor
  2. Damaged wiring or connector
  3. Corroded connector
  4. Loose sensor mounting

How much does it cost to fix P0325?

$150 – $900

Some V6 and V8 engines mount this sensor under the intake manifold, which raises labor cost.

Confirm the code yourself

A low-cost scanner lets you read the code, clear it, and see if it comes back before paying for a diagnosis.

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