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Old 11-17-2011, 06:44 PM   #1
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p0452 pressure sensor code

Evaporative Emission Control System Pressure Sensor Low Input

alright you guy's how can i go about getting rid of this code?

I've got a 99 9-3 which means t-5 engine management...

What are some things that could be causing this code to show its dirty face?
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Old 11-18-2011, 04:18 AM   #2
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WIS reports: EVAP Tank Pressure Sensor Circuit. Short to Ground.

Conditions:
Ignition switch in ON position.
Voltage below 0.1V for more than 5s
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Old 11-28-2011, 05:35 AM   #3
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Quote:
Originally Posted by PimpMyPc View Post
WIS reports: EVAP Tank Pressure Sensor Circuit. Short to Ground.

Conditions:
Ignition switch in ON position.
Voltage below 0.1V for more than 5s
So how would one remedy this issue?
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Old 11-28-2011, 06:35 AM   #4
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Either check your wiring or you have a fault with the sensor. Only way to get to the sensor is to drop the tank.
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Old 11-28-2011, 08:08 AM   #5
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welcome to the awesome world of trying to fix evap purge related codes. sounds like you might have an easy fix with the one sensor tho and not just a leak to track down.





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Old 11-28-2011, 09:07 AM   #6
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The code is not leak related. Only faoult with sensor or wiring only. Luckily no need to leak test the systme for that could take days to find in some cases, and a be a real PITA to find.
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Old 11-28-2011, 09:29 AM   #7
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The code is not leak related. Only faoult with sensor or wiring only. Luckily no need to leak test the systme for that could take days to find in some cases, and a be a real PITA to find.
trust me, i know im right in the middle of it. replaced many things already and still have a code.



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Old 11-28-2011, 12:15 PM   #8
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Remove the cap under the back seat. Unplug the Tank Pressure Connector (4 pin connector with 3 wires). On the body side (male connector), check the voltage between pin 1 and a good ground. Should be 5v KOEO. Check the voltage between pin 1 and 2. Should be 5v KOEO.
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