Hi guys.

2006 Toyota Camry 4-cylinder was driving wonderfully... Then suddenly rough idling, difficult acceleration, and blinking Check Engine Light.
The Codes are P0303 & C1241.
I changed the coil pack in cylinder 3 and had the battery and alternator checked.
From what I have researched on YouTube and online, and a suggestion from the AutoZone computer code check, it can be the ABS Control Module.
From what I have researched, this ABS CM can strangely affect shifting, idling, odometer, speedometer, etc.
My current mindset is to go to the junkyard and hope I get a good to trade out.

Has anyone else had this problem? If so, what was your experience? What was your fix?

- DeaconRey

 

C1241 can be caused by low voltage to the ABS or a problem with the ABS power supply. Check the wiring harness plug to the ABS unit for issues.

The P0303 code can be caused by a host of issues including ign problems.

If the light is blinking the is a major misfire which could damage the emissions converter.

See private message.

 

toyomoho

Just wanted to update. I spliced in new pig tails for each ignition coil. Replaced all 4 ignition coils. Put in 4 new spark plugs. Problem fixed. Check engine light turned off. She's running beautifully!

 

Great job. Thanks for posting back with the fix.