Question about Pontiac Sunfire

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Hello i did a diagnostic on my 98 poniac sunfire and this is what it read heater circut? po 141? 02 bank1,sensor2? could u tell me what this means please and thank you

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It's the 02 sensor behind your cat. converter drivers side.

Posted on Mar 21, 2011

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Hello Cheryl.
The powertrain control module is mounted in the engine compartment on the right side beside the strut tower towards the firewall.
It is rare to have a problem with these. I have many customers with these model cars and have never replaced one.
I hope you find your problem quickly.
Best of the festive season to you.

KL

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