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Old 05-05-2010, 09:48 PM   #1
oscar2k23
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p0942 p0943 Secondary Air System

After pulling these two codes, I diagnosed my secondary air system, after looking at all the possible problems, I realized that this hose was cracked and needed replacement. I think this is whats throwing off these two codes. Does anyone know where I can get this hose or what part number this is. It connects to the check valve in this location from the following picture:
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Old 05-05-2010, 09:59 PM   #2
xi_ter
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When I needed to replace the thin tubing I needed to buy it by the foot at PartSource (a Canadian equivalent of Autozone ). Bring in a wood dowel or something that is exactly the same diameter since the tubing needs to stretch over the outlet on the valve.
The dealership didn't sell OEM tubing and used similar tubing awhen I got them to redo the secondary air tubing run to the back of the engine.
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Old 05-06-2010, 11:29 AM   #3
jdstrickland
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Ditto.

The small tubing is common hose that they sell by the foot at most auto parts stores.
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Old 05-06-2010, 11:41 AM   #4
jdstrickland
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Quote:
Originally Posted by oscar2k23 View Post
After pulling these two codes, I diagnosed my secondary air system, after looking at all the possible problems, I realized that this hose was cracked and needed replacement. I think this is whats throwing off these two codes. Does anyone know where I can get this hose or what part number this is. It connects to the check valve in this location from the following picture:
Are you sure you got those codes right?

The code lists that I have say nothing about Secondary Air issues.
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Old 05-06-2010, 11:42 AM   #5
jdstrickland
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P0942....Hydraulic Pressure Unit

P0943....Hydraulic Pressure Unit Cycling Period Too Short
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Old 05-06-2010, 12:30 PM   #6
David F
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The hose that came with the car is metric and chain autoparts stores wont carry it. The dealer will have the proper vacuum hose sold by the meter (part number 11.74.7.797.175)
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Old 05-06-2010, 01:54 PM   #7
oscar2k23
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my mistake p0492 and p0493 codes
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Old 05-06-2010, 03:34 PM   #8
oscar2k23
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here is a picture of the broken hose
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Old 05-07-2010, 10:56 AM   #9
David F
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Just replace the hose. If the hose is bad, then you will get check engine light with secondary air system fault (bank 1 and 2). The hose is about 4 inches long and connects to plastic tubing that runs around back of engine to vacuum solenoid switch. The tubing is connected to the vacuum solenoid with rubber vacuum hose which is subject to failure as well...and very hard to replace.
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Old 05-07-2010, 12:44 PM   #10
oscar2k23
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Quote:
Originally Posted by David F View Post
Just replace the hose. If the hose is bad, then you will get check engine light with secondary air system fault (bank 1 and 2). The hose is about 4 inches long and connects to plastic tubing that runs around back of engine to vacuum solenoid switch. The tubing is connected to the vacuum solenoid with rubber vacuum hose which is subject to failure as well...and very hard to replace.
do you know what part number that is?
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Old 05-07-2010, 01:10 PM   #11
ThatGuy_JZ
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advance auto/ autozone has vacuum hose like that cheap.
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