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Code po240, what needs to be done - Cars & Trucks

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Could be 16 things...

Posted on Jul 29, 2015


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My 2003 Isuzu Rodeo will not start it clicks when I try to crank it.

If it is just clicking then the starter motor is not turning over and you will not be able to start the engine.

You need to check...
1. The starter motor relay. If it has failed you will get no power to the starter motor and you replace it with a new relay. Your owners manual shows you the location of the relay.

2. Check the power supply to the starter solenoid and then from the starter solenoid to the starter motor itself.

3. If these are getting the correct current then you may have either a failed starter motor solenoid or the motor itself. Do not just replace the starter motor and assume that will fix the problem (as some people do) without doing all the essential wiring and current checks. If there is a wiring failure or the starter unit is not receiving the correct power you need to address that issue.

The P0240 code I believe has nothing to do with the starting issue. It relates to the catalytic converters on the exhaust system.
Read about the issue from the link below or look up numerous other references.

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