Skip the auto shop - Our mechanics make house calls

Q: Can't pass smog check.

asked by on

My Check Engine light went on and off today. When I took it for a smog check, it showed a code P0325, Knock Sensor I CKT Malfunction.

A: Hello. I am glad that you got the codes fro...

Hello. I am glad that you got the codes from the smog shop as that helps with the diagnosis. I have changed a lot of knock sensors on this model of Subaru when this code comes up. I have also seen the connector fracture and cause the terminals to have poor connections which will also turn up this code. A certified mechanic will do a resistance test of the sensor and also do a visual of the connector to diagnose this. You should enlist the help of a certified mechanic, like one from YourMechanic, who has the tools and the experience to be able to perform this task.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car lacks power

First check your EGR system for leaks. If EGR is on or stuck, at idle, that can cause rough operation. To further diagnose your issue, obtain compression test results (in case the issue is due, even in part, to burned...

Q: I have a 2002 chevy avalanche z71 it won't move forward in any gear,but it will move in reverse

Check to see if any diagnostic trouble codes have been stored in both the PCM and TCM. Check the fuses in the circuits that power the transmission controls. Occasionally, a short in a sensor such as an oxygen sensor will...

Q: What does trouble code P0325 mean?

Hi there - P0325 is a Knock Sensor Malfunction. Knock sensors provide a significant function in a modern engine. A failure of the engine knock sensor is a somewhat risky issue. Modern engine have fairly high compression ratios, all in...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...