CODES 139 AND 112

1998 BMW 740

Tiny

vsavcic

June, 7, 2010 AT 12:45 AM

Engine Mechanical problem
1998 BMW 740 V8 Two Wheel Drive Automatic 150000 miles

Hello,
My 1998 BMW 740iL periodically shows check engine and periodically the check engine goes off. When the check engine is on it was diagnosed by these 2 codes: 139 and 112.
It was repaired by BMW certificated mechanics however it still shows these codes as whenever the check engine goes on.
Any help is greatly appreciated.
Thank you.

vsavcic@yahoo. Com

FOUND 618 RELATED QUESTIONS

3 Answers

Tiny

Dr. Hagerty

June, 7, 2010 AT 10:41 AM

How are these codes showing up? What extraction method are you using?

Tiny

vsavcic

June, 8, 2010 AT 12:05 AM

I was looking over a shoulder when mechanic was using an orange/red diagnostic tool and these were two codes showing: 139 Electronic Thermostat Circuit
112 Camshaft Position Sensor

Thanks,

Vlado

Tiny

Dr. Hagerty

June, 8, 2010 AT 9:15 AM

Thank you so much for the clarification! The car uses an electronically controlled coolant regulating device, it can change it's resistive value, and when it does, it flags a fault. The cam position sensor is a hall effect device, and when the signal is degraded or is not present for whatever reason, it flags a plausibility fault. These faults can be currently present, or not. They are typical failures and are not some figment of the technicians imagination. It is possible to repair these and still have them be present if the faults were not erased. I hope this is helpful in your quest for knowledge, a second opinion is almost always a good thing, dont you agree?

Please login or register to post a reply.

 Oil Change and Filter Replacement Subaru
 Oil Change & Filter Replacement Honda Civic
Fuel Pump Test Chevy Tahoe
Replace Rear Brake Pad-Rotor Subaru Legacy
Serpentine Belt Replacement Ford Contour
Engine Oil Change and Filter Chrysler PT
Engine Oil Change and Filter Honda CR-V