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P0545 - A/C Clutch, or EGT Sensor?


Old 07-07-2011, 08:51 PM
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Default P0545 - A/C Clutch, or EGT Sensor?

So doing some searching, I have found that everybody refers to P0545 being one of two things.

Exhaust Gas Temperature Sensor Circuit Low
A/C Clutch Relay Circuit Problem

Which is it?

A/C is working fine. Idle has always been a little rough since I got it, but code is new. Was told it smells like its running rich when driving, but at idle is smells fine. When I clear the code, it comes right back as soon as I turn on the ignition. Ideas? Maybe O2 sensor time? I'll bet they're originals with 200k on them.
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Old 07-07-2011, 11:10 PM
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P0545 A/C Clutch Relay Circ

The reason they are messing it up is because that code is surrounded by exhaust CEL's. https://dodgeforum.com/forum/1st-gen...ine-light.html

As for your O2 sensors, make sure there is no brake fluid in or on the harnesses for them. However 200k miles, well you might want to replace them. I suggest Denso from www.rockauto.com because Denso makes the OEM ones.
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