Multiple codes - short circuit?

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Sep 14, 2004 | 04:50 PM

robertbartsch

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Joined: Aug 2002

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From: Hartsdale, NY

Multiple codes - short circuit?

I changed front brake rotors and pads and now I'm throwing multiple codes.

P0110 - intake air temp sensor 1 curcuit
PO521 - Engine oil presure sensor/switch range performance
PO113 - INtake air temp sensor 1 circuit
PO435 - Cat temp sensor Bank 2
PO089 - Fuel pressure reg. 1 performance
PO563 - System voltage high
B3688 - ?
C2176 - ?
P2202 - ?
C3520 - ?
B1835 - ?
P1210 - ?
C1420 - ?
C1067 - ?
C0504 - ?

Any ideas? Could this be a short circuit?

Thanks...

Sep 14, 2004 | 06:11 PM

horist

TECH Senior Member

Joined: Nov 2001

Posts: 7,036

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From: Lake Zurich, IL

well.. first thing... check all your fuses if it's a short somewhere you'll have a popped fuse... if it pops after putting a new fuse in ... then prolly a short somewhere

Sep 15, 2004 | 08:31 AM

robertbartsch

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TECH Veteran

Joined: Aug 2002

Posts: 4,055

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From: Hartsdale, NY

OK Thanks....

No fuses have blown....

Sep 15, 2004 | 08:40 AM

jimmyblue

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From: East Central Florida

Check out your battery voltage (alternator actually)
and the +5V outputs of the PCM (like the TPS gray
wire I think). The "system voltage high" code I think
is closer to the root of it. If the references out of the
PCM are messed you're way out of luck. Check the
+5 relative to PCM ground (TPS black wire) and check
the black wire ground to block and chassis sheet metal
voltages with engine running and accessories on. Any
voltage difference can bother some sensors and might
be due to a ground strap problem. Too high an alt
voltage though might be either ground strap or a
loose/disconnected field sense wire (?).

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