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2007 Chrysler 300 CRD - 123,000 miles

Hi All,

The orange engine light has just come on, without any symptoms or problems noticeable.

I have connected my OBD2 scanner which has given me fault codes P0426 and P2084.

P0426 says: Catalyst Temperature Sensor Circuit Range/Performance, Bank 1 Sensor 1
P2084 says: Exhaust Gas Temperature Sensor Circuit Range/Performance, Bank 1 Sensor 2

I have read a few similar posts, but am just looking for some guidance, please, as to what to check first.

I have just cleared the fault codes with my OBD2 scanner and the orange light has gone out, so I will continue to drive the car, but am anticipating the orange engine light will reappear.

Many thanks for any suggestions.
 

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Mines just done the same - initial thoughts is change both the exhaust gas temperature readers. When i clear the codes down it goes away for a few weeks then comes back. I can see the readers reading on my odb software so it could be shorting due to corroded plug or chaffed wire.

did you get anywhere with this?
 
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