Engine Code 41 Question:

This engine code 41 showed up on my 1993 Dodge minivan which has poor power accompanied by hesitation on acceleration and stalling on stop signs. When scanned, I have engine code 41. I have checked the engine for mechanical condition and seemed OK. Using your ATS ecm test, I found the engine acting up when the ecm is tapped with a rubber mallet. I decided to replace the ecm and it worked good for a couple of days. After that, the problem returned with the code 41. Please help.

ATS Engine Code 41 Fix:

To fix engine code 41, the first thing I would check here is your alternator. There are a lot of reports indicating that this is a common problem especially on high mileage minivan with this model. Check the alternator for proper grounds or have it tested for proper voltage output. If this won’t fix it, have the body control module (bcm) tested also for wiring ground connections. If you read my earlier blog, bcm testing is discussed extensively. Always reset the ecm every time you perform any repair by disconnecting the battery negative terminal for 1 minute and reconnecting. You can then road test the vehicle and see if the engine code 41 returns. If not, you got it fixed.

Should you need assistance, you should get a wiring diagram for your vehicle so you can trace the wiring connections. This diagram is handy especially to determine the color of the wires you are tracing so you can easily fix the problem. You can get them free from your local library or buy them either from your local parts store or the Internet. ATS has been providing low cost service for vehicle owners since 2000 so regular drivers can save money in vehicle repairs.

Fixing engine code 41 is an obd1 diagnostic problem and can be easily done if you have the proper information and tools. You don’t even need to have the scanner (for vehicles made between 1983-1995) if you follow the instructions on how to get the code manually. Thanks!