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95 Legacy P0325 and P0106 related?


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6 replies to this topic

#1 AEROCOOK

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Posted 21 April 2008 - 06:29 PM

My CEL has been on for a while and the fuel economy has gone down the tubes. I pulled codes P0325 and P0106 out which I believe are knock sensor and MAP sensor respectively. Is it possible that these 2 codes are related? If the knock sensor fails I understand that the ECU will retard the timing to protect the engine from detonation, Is it possible that this can affect the MAP sensor at all? Also, I just want to confirm the location of the MAP sensor it's on the manifold pass. side has 3 wires identified with ABC right?

#2 EVOthis

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Posted 21 April 2008 - 06:34 PM

the MAP sensor is located on the passangers side shock tower ( at least it is on my 96' Legacy).....i dont believe they would be related (but lord knows electricity does some weird stuff)......did both of the codes set at the same time? I also believe that the knock sensors on this year/model are prone to cracking on the side that contacts the block......

#3 AEROCOOK

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Posted 21 April 2008 - 06:55 PM

Yes, it seems knock sensor failure is common on Subarus of this vintage and I have one on order. As for the MAP sensor, what does yours look like? I have looked at everything on the pass side strut tower but not really sure what Im looking for. The item that I thought was the MAP sensor is bolted directly to the manifold is kind of cylindrical in shape with a grey adjustable cap on top.

#4 aircraft engineer

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Posted 21 April 2008 - 07:45 PM

http://www.ultimates...99&d=1208455598

it's a "rusty" one but it's a pic - pax side shock tower - the car was supposed to be a 95

#5 AEROCOOK

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Posted 21 April 2008 - 09:09 PM

http://www.ultimates...99&d=1208455598

it's a "rusty" one but it's a pic - pax side shock tower - the car was supposed to be a 95

Thank you, I do recall seeing that part and I really appreciate your effort to find and post the picture. I live in Ontario and the old Legacy has to pass an emmisions test by June or she's off the road. I initially ruled out that part because I thought I read that the MAP sensor had 3 wires.
Going to replace knock sensor this week and see if the light comes back on.

#6 AEROCOOK

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Posted 28 April 2008 - 10:10 AM

Can anyone provide the torque spec for the knock sensor?

#7 OB99W

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Posted 28 April 2008 - 10:51 AM

Can anyone provide the torque spec for the knock sensor?

Here you go: http://endwrench.com.../1995Subaru.pdf

Better to be on the low than the high side of the spec.




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