Having problems with engine light on and code is P0118

Tiny
TIM.JEFFGORDONFAN
  • MEMBER
  • 2008 CHRYSLER PT CRUISER
  • 62,000 MILES
Just had cylinder 3 misfire fixed, replaced cylinders, gaskets, shaved heads, replaced water pump, timing belt and drained and refilled antifreeze. Now engine light on and temp gauge not working. Code is P0118 engine coolant temp sensor circuit high. What to do?
Wednesday, June 27th, 2012 AT 9:46 PM

7 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 34,330 POSTS
The coolant temperature sensor is unplugged or one of the wires is broken.
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Wednesday, June 27th, 2012 AT 10:25 PM
Tiny
TIM.JEFFGORDONFAN
  • MEMBER
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Thank you very much
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Wednesday, June 27th, 2012 AT 10:36 PM
Tiny
TIM.JEFFGORDONFAN
  • MEMBER
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Could you tell me how to fix sensor and where it is? Is there a website with pictures?
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Wednesday, June 27th, 2012 AT 11:34 PM
Tiny
CARADIODOC
  • MECHANIC
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On most engines it is next to or on the thermostat housing. Follow the upper radiator hose to that housing.

The closest service manual I have is for a '01 Neon. That one shows the coolant temperature sensor on the rear of the cylinder head next to the camshaft position sensor. "Rear" in this case means driver's side, close to the brake master cylinder. The line drawing shows some pipes or hoses in a metal strap going right over the top of those two sensors.

In this book the wire colors for the coolant temperature sensor are black with a light blue stripe and tan with a black stripe.
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Wednesday, June 27th, 2012 AT 11:54 PM
Tiny
TIM.JEFFGORDONFAN
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Thanks
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Thursday, June 28th, 2012 AT 12:22 AM
Tiny
CARADIODOC
  • MECHANIC
  • 34,330 POSTS
Did you find it?

By the way, I had a former student work in Nascar country for a few years. He had personal one-on-one conversations with Jeff Gordon, Earnhardt Sr, and many others.
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Thursday, June 28th, 2012 AT 12:42 AM
Tiny
TIM.JEFFGORDONFAN
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Yes thanks. Kool about nascar
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Thursday, June 28th, 2012 AT 2:21 PM

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