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2002 Dodge Intrepid check engine light stays on

Tiny
JILLIEROO
  • MEMBER
  • 2002 DODGE INTREPID
  • 114,000 MILES
I have spent $800 so far fixing a sensor in or on my fuel tank, I've replaced the oxygen sensor in bank 2 slot 1, and the replaced a part that had to do with my catalytic converter. I'm still getting obd code P0452 for why my light is on. What is the problem?
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Tuesday, July 23rd, 2013 AT 8:02 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,871 POSTS
P0452 - Evaporative Emission Control System Pressure Sensor Low Input

This code suggests there's a problem with the wiring to the pressure sensor, not that the sensor is defective. Typically this type of code is the result of a grounded wire. I'd start by inspecting the wiring harnesses for signs of chewed up wires or wires that are near hot exhaust parts or laying on sharp metal brackets.

The next step would be to connect a scanner to view live data so you can read the sensor's voltage. You can disconnect things to see what makes the voltage change to narrow down the location of the problem.
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Tuesday, July 23rd, 2013 AT 9:41 PM

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