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The malfunction indicator light came on, on a nissan almera tino 2003 , it showed a 335 fault which was the crankshaft position sensor which i got replaced but the light is still on so then had new spark plugs done but light still on , can you help please ?
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You will need to get a Good Mechanic to look at this. There are 3 completely different problems here so it will need to be properly checked out. I've listed the Trouble Code definitions below.
-The knock sensor looks for signs of the fuel igniting at the wrong point in the sequence.
-The Crankshaft position sensor checks the pistons are in the correct position for the engine electronics to be in the correct sequence.
-The Air Control system is a set of valves that adjust air flow through the engine when running at different speeds. (Slow needs less air, fast needs more air).
Knock Sensors and Crankshaft Position Sensors can be in some ridiculous places on an engine and usually need major surgery to get to them. Air control systems could be anything from a 'sticky' valve to a faulty sensor.
P0325 = Knock sensor (KS) 1, bank 1 - circuit malfunction
P0335 = Crankshaft position (CKP) sensor - circuit malfunction
P0505 = Idle Air Control System
Have the codes read anyway. Turn the key on, do you see a check engine light? We work on auction cars also. To many times I see that the light is not on.
doubt it --- for sudden problems check items like fan operation if electric, viscous fan hub if fitted, blocked radiator fins / corroded fins, failed cat converter blocking exhaust.
run the fault codes to check for any sensor failure.
A P0130 fault is typical, and represents "02 Sensor Circuit Malfunction (Bank I Sensor 1)" It will NOT go away until fixed. This is not a safety issue, but an emissions related issue. Fuel economy and performance can be impacted and if allowed to persist for a long time, damage to the catalytic converter may result. Replacing a cat converter can be expensive repair. If your state does emissions testing as part of regular vehicle inspection, you will probably fail.
The P0725 Codes is triggered when TCM does not receive the engine speed signal from ECM.
The Engine Control Module (ECM) monitors the engine speed through the
Crankshaft Position (CKP) sensor with the engine running, and send
signal to the Transmission Control Module (TCM).
Symptoms: - Engine Light ON (or Service Engine Soon Warning Light)
Possible causes: - Open or shorted CKP sensor circuit condition - Poor CKP sensor electrical connection - Check communication error between the ECM and TCM - Failed CKP Sensor
Possible solution: Very common problem with Nissan vehicles, usually replacing the Crankshaft Position sensor takes care of the problem.
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