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99 chevy astro van willnot start engine codes po452 and po453 pulled

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Posted on Jan 02, 2017

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SOURCE: codes po452 and po453

both codes point to the fuel tank evap pressure sensor. High and low input faults.
Try clearing the codes first and seeing if they come back

You may have a vacuum leak, cracked or open vacuum line or faulty sensor.

Posted on Dec 21, 2009

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What is code po453 on my 99 chevy suburb mean??with engine light on...???


code p0453 refers to evaporative emission (EVAP) pressure sensor-- high out put === causes wiring short to positive--- EVAP pressure sensor--- ECM
I would change the sensor unless you have been messing with the wires.

May 01, 2015 | Cars & Trucks

1 Answer

Sensor codes


http://www.obd-codes.com/p0453.....
http://www.obd-codes.com/p0452

http://www.obd-codes.com/p0420
This is what the codes mean.

Your carburetor and fuel system is acting up (or you lost the fuel cap!)
You need a carburetor and engine service. This is not a user friendly problem!

Mar 09, 2014 | 1998 GMC Safari

1 Answer

2001 chevy astro van code po452


Evaporative Emission Control System Pressure Sensor Low Input.

Jul 14, 2012 | Cars & Trucks

1 Answer

1999 Chevy astro van won't start


Had the same issue with our 1999 chevy astro van, would crank but would not start. It had been raining and windshield had a leak, after 2 days of no rain it started. Pulled codes and was the Security system in the ignition switch. Hope this helps.

May 04, 2012 | 1999 Chevrolet Astro

2 Answers

Codes po452 and po453


both codes point to the fuel tank evap pressure sensor. High and low input faults.
Try clearing the codes first and seeing if they come back

You may have a vacuum leak, cracked or open vacuum line or faulty sensor.

Dec 21, 2009 | 2001 Chevrolet Blazer

2 Answers

1999 Chevy Astro Van. Don't know exact model # of


You should have a 4l60E in your astro van. Which is electrically controlled, so no vacuum modulator. However, to address the ventilation selector not working... look for a vacuum line exiting the firewall and going to the passenger rear of the intake manifold. You will likely find it broken or disconnected there.

Dec 03, 2009 | 1999 Chevrolet Astro

3 Answers

Po452 trouble code changed sensor engine light


you might try unhooking the battiey for 20min both + and - posties cuz that will force the computor to have to resest only if you have addressied the fuel pressure problem which taht would most likly be your filter which isn't all that much

Sep 21, 2009 | 2000 Chevrolet Silverado

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