- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
I would suspect a canister purge control; valve causing vacuum to the evap canister all the time. You may have to replace the evap canister if it is saturated with fuel. This will also result in the check engine light coming on with oxygen sensor codes for the engine running too rich
p0171 = fuel system too lean, this means vacuum leak or faulty oxygen sensor
p0303 = cylinder 3 misfire
p0325 = knock sensor malfunction.
p0303 and p0325 - i can see these working together, if a cylinder misfires, it will cause the knock sensor to trip. I would lean towards the coil and or ignition module, along with a faulty oxygen sensor.
might be the CAM & CRANK SENSORS ! HAVE YOU CHANGED YOU AIR & FUEL FILTERS LATELY ? DO SO IF YOU HAVEN'T. DID YOUR SERVICE ENGINE SOON LIGHT COME ON ? IF SO, GO TO AN AUTOPARTS STORE, HAVE THEM PULL OUT ANY TROUBLE CODES,FROM ECM, IF IT SAYS CAM SENSOR, REPLACE THE CRANK SENSOR AT SAME TIME ! ALSO, THE OXYGEN SENSOR PLAYS AN IMPORTANT ROLE, YOU MIGHT REPLACE IT ASWELL . ALWAYS KEEP FILTERS NEW, OIL CHANGED EVERY 3000 MILES.
p0325 = bank 1 sensor 2 oxygen sensor p0141 = knock sensor if it were me you could watch the sensor on a scanner to see if working properly but without a scanner i'd replace the oxygen sensor bank 1 = passenger side sensor 2 is sensor behind the catalictic converter screwed in
Heated oxygen sensor curcuit -
This fault indicates a faulty O2 sensor or bad wire to that sensor.
It is a relatively cheap part - it bolts into the exhaust at the front of the car,
you can see it between the engine and radiator, bolted into the exhaust with a cable running to it.
You can check this cable for security and make sure the connector is secure. it probably is faulty though.
It should be close to the muffler. You can change it however the engine must be warmed up in order to remove the sensor. If you change it make sure you use anti seeing commpound when you replace the sensor. Prices vary from $15.00 to $100.00. Check with auto store for price. Might get a better deal on Ebay.
This car does not have a timing chain, it has a belt. The reason your knock sensor and O2 sensor is coming on is likely because your timing belt has stretched which caused it to jump time. Since the engine is not properly timed the fuel mixture is off and the engine is pinging/knocking and that is why the knock sensor is coming up. The sensors are doing their job and keeping the engine from blowing. You should put a timing belt on the car ASAP. I recommend changing the tensionors while you are at it.
tire psi correct .no dragging brakes,clean air filter.proper gap on spark plugs,clean oil,check engine light off should be good to save and calm driving habits should help/ oxygen sensors/ o2 .should be changed at 100,000 km regardless as they wear out,slow crosscounts to ecm via fuel management ,dont over look o2 sensors just because there is no dtc in computer history