2011 Dodge P0325: What It Means & Is It Safe to Drive?
P0325 on the 2011 Dodge: Knock Sensor 1 Circuit Malfunction (Bank 1). Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
What this code means
The PCM isn't receiving a valid signal from knock sensor 1. Without knock feedback, the PCM retards ignition timing as a safety measure, reducing power and economy.
Common causes on the 2011 Dodge
- Failed knock sensor
- Corroded or broken wiring/connector at the sensor
- Actual engine knock from carbon buildup or low-octane fuel
Symptoms
- Check Engine Light
- Reduced power and fuel economy (PCM retards timing)
- Possible audible knock or ping under load
Typical fixes
- Replace knock sensor
- Repair wiring and connector
- Use correct octane fuel and address carbon buildup
Repair cost range
For a 2011 Dodge, repairs for P0325 typically fall between $150 and $500, depending on the root cause and labor rates in your area.
Known issues on Dodge
Dodge P0325 on Pentastar 3.6L V6 mirrors Jeep—the knock sensor connector under the intake manifold accumulates moisture, causing intermittent circuit faults. On 5.7L Hemi, knock sensors are on the side of the block and are more accessible, but the harness can chafe on the engine mount bracket. Use fresh connector pins and dielectric grease when servicing. On Dart 2.4L Tigershark engine, P0325 is uncommon but if present, verify the sensor is the OEM Bosch type—Tigershark engines are sensitive to aftermarket knock sensor frequency characteristics.
Most commonly affected models