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Check Engine When Handbrake On

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IdahoBob
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Check Engine When Handbrake On

Post by IdahoBob »

In the 2006 XC70, when I start the car if the handbrake is on (handle in the up position, parking brakes engaged) the brake light and the Check Engine Light (CEL) are on. When I release the handbrake the CEL goes off. When I stop the car and pull the brake on the CEL comes on. After I switch the engine off the CEL stays on for 15 (?) seconds and then goes off. Any good ideas on where to look, what to fix?
Idaho Bob
67, 71, 85, 98 wagons (sold)
78 coupe (gave to mechanic, thanks!)
02, 04 (X2) & 08 XC70's
before that: 67 Sunbeam, several pre-68 VW's, '41 Buick, '42 Ford Jeep, and some boring stuff
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abscate
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Re: Check Engine When Handbrake On

Post by abscate »

Erik - this one is for you...

:-)

Bob - your 2006 is all CANBUS, very little analogue stuff left on these cars, every component talks to a control module somehow, so when things go bad, you do get a lot of weird things happening.

At first I thought you might have a simple wiring problem in the handbrake but that won't fly on an 2006.

My total wild guess is a fault in the DIM which is powering up the CEL when it shouldn't
Empty Nester
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