P0053 2005 Trailblazer

[David Gullage]

We were traveling in the Northeast, I had a few instances of hard starting, usually after a fill up. Seemed like a lack of fuel issue. The check engine light came on while in New York, P0053 was the code. Give me an idea on what to look at.

Thanks

Topic

[college man]

the heater circuit in the o2 did not come up to temp.
check the fuse.with key on engine off.check for 12v
on the o2 heater circuit. next check the o2 heater
circuit with an ohm meter.

http://ww2.justanswer.com/uploads/Bluegorilla/2009-09-20_034502_p0054.pdf

[David Gullage]

Thanks for the help, looks like everything checks out OK. What next?

[dreamer2355]

What testing did you do to diagnose that code?

[college man]

[quote=”DaveG” post=69910]Thanks for the help, looks like everything checks out OK. What next?[/quote]

What testing did you do?

[David Gullage]

I used a Harbor Freight ODB code reader. I read the code and reset it. It has not returned the code since.

[college man]

You need to test the heater circuit. my
previous post will help. keep us posted.

[Author]

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