| Originally posted by Prof. Gizmo@Oct 16 2004, 04:11 PM |
I have a 2000 328Ci with similar symptoms. The SES light is on for a day or so, and
then goes out. At first, I thought it was a leaky gas cap, but I just took it to Autozone
and their OBDII reader displayed the code "P1397", which they decoded as "System
Voltage out of self test range". However, when I do a search on the internet for OBDII
codes, "P1397" is decoded as "Camshaft Position Sensor "B" (Bank 1)". Other forums
have indicated that this is a "high failure" item and relatively easy to replace since it is
located at the front of the motor near the exhaust camshaft and held in place by a single
bolt. Don't know how much BMW wants for one of these things, but if its "reasonable"
I'm going to replace it myself. If I do, I'll post my results. Wish me luck.
Sorry for not posting my results but, frankly, I just forgot to once the problem was
solved. Here's what happened;
I bought an exhaust camshaft position sensor (12 14 1 438 082) and o-ring
(12 14 1 748 398) from Bavarian Autosport (www.bavauto.com
) for $96 and $1.50,
respectively, (plus shipping).
To replace the sensor, you first have to unplug the connector, which can be tricky
and a bit frustrating the first time you do it, because you have to pinch both sides of
the plug to release the pawls, while simultaneously wiggleling it from side to
side and pulling, but it *will*, eventually, let go.
The sensor is bolted to the head with a 5 mm allen (hex) head bolt, which is located
directly beneath the connector, which makes it almost impossible to see, so you have
to feel around in order to get the allen wrench inserted. The rest is *easy*. Remove
the bolt, pull the old sensor out and throw away, put the new o-ring on the new
sensor with a light coating of oil and bolt it back into place, reconnect the cable
(make sure it "clicks" back into place, and you're done.
If memory serves, the SES light went out after a few start/stop cycles and hasn't
turned on again since.
I should mention that there may be a newer version (improved?) of the sensor now
available (12 14 7 518 628)(?), but Bavarian Auto didn't carry this one, so I may be
doing this again sometime in the future. But for now, this seems to have solved the
problem, so I happy.
Hope this discription helps someone else.