OBD1 Error code 41

Tiny
MOBIUS43
  • MEMBER
  • 1995 JEEP GRAND CHEROKEE
  • 6 CYL
  • AWD
  • 195,000 MILES
I have an OBD1 error code of 41. What is the problem and how do I fix it. Replaced the battery already
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Thursday, August 4th, 2011 AT 11:14 PM

3 Replies

Tiny
CJ MEDEVAC
  • EXPERT
Hello,

41 An open or shorted condition detected in the generator field control circuit. You need to replace your alternator this guide will walk you though the steps.

https://www.2carpros.com/articles/how-to-replace-an-alternator

Please run down this guide and report back.

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Thursday, August 4th, 2011 AT 11:40 PM
Tiny
CARADIODOC
  • EXPERT
"Charging system circuit not responding to control signal".

I've never run into that code, but I'd start by measuring battery voltage while the engine is running. It must be between 13.75 and 14.75 volts. If it's low, measure the voltages on the two small wires on the back of the alternator. That must be done while the engine is running.
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Friday, August 5th, 2011 AT 1:03 AM
Tiny
ROBERT CHOW
  • MEMBER
Thank you for this post I had this problem and fixed it ya!
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Monday, July 29th, 2019 AT 11:55 AM

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