Summers22 Posted October 30 Report Share Posted October 30 Trying to help my daughter with her car. Multiple codes, reduced power and very sluggish acceleration up until 40mph. No check engine light. List of codes: ABS Antilock braking system : DTC Description Status U0140:00:20 Lost Communication With Body Control Module CMDTC U0265:00:20 Lost Communication with Image Processing Sensor A CMDTC U2107:00:68 Collision Mitigation By Braking CMDTC U3003:16:60 Battery Voltage CMDTC PCM Powertrain Control Module: DTC U0284:00:68 Description Lost Communication with Active Grille Air Shutter Module 'A' CMDTC Quote Link to comment Share on other sites More sharing options...
1004ron Posted October 31 Report Share Posted October 31 The symptoms you describe suggest it was in "Limp Mode" but if that was the case the CEL would be on and a code set. What are you using to scan for codes? 1 Quote Link to comment Share on other sites More sharing options...
Summers22 Posted October 31 Author Report Share Posted October 31 I am using a TopDon Artidiag500. Thats the odd thing, no check engine light. Part of me things it could be a torque converter issue and a transmission drain and fill would help. Google AI says all symptoms point to a bad battery, I did replace it in August of 25 and did the BMS reset with the same scanner. Quote Link to comment Share on other sites More sharing options...
1004ron Posted October 31 Report Share Posted October 31 Based on many reports here and elsewhere I don't have much confidence in scan tools other than Forscan. If there really isn't any related codes then it will need more in depth diagnostics - display live data such as fuel trims etc. Quote Link to comment Share on other sites More sharing options...
Summers22 Posted October 31 Author Report Share Posted October 31 O'Reilly says bad battery, going to get it replaced now. 1 Quote Link to comment Share on other sites More sharing options...
1004ron Posted October 31 Report Share Posted October 31 21 hours ago, Summers22 said: reduced power and very sluggish acceleration up until 40mph. 47 minutes ago, Summers22 said: O'Reilly says bad battery, going to get it replaced now. If the alternator is working I don't see how the bad battery will cause the symptoms you describe. Quote Link to comment Share on other sites More sharing options...
Samurai Edge Posted November 2 Report Share Posted November 2 On 10/31/2026 at 12:13 PM, 1004ron said: If the alternator is working I don't see how the bad battery will cause the symptoms you describe. All depends on how much the OP's daughter has been driving the car. This could again be one of those things where there is a battery drain due to sensors on 24/7 even while the car sits unused. The drain can cause all sorts of weird codes to pop up. If he comes back and says, " It's all fixed " then issue solved as well as the culprit. Quote Link to comment Share on other sites More sharing options...
Summers22 Posted Saturday at 04:11 PM Author Report Share Posted Saturday at 04:11 PM Update, new battery produced same results. She checked with her salesman and he said bring it in and they will look at it. Thats when she told me she bought an extended warranty and hopes its covered (she "forgot" to tell me that after days of me running my own diagnostics and google research). I told her I would pay any diagnostic fee and deductible. Turns out they diagnosed ot as needing a new transmission, $100 is all she is paying and they gave her a loaner. Said they have no clue on timeframe for replacement..... Quote Link to comment Share on other sites More sharing options...
Samurai Edge Posted Saturday at 04:26 PM Report Share Posted Saturday at 04:26 PM Ah, Daughters. 😑 New transmission? Can't wait to hear the results. Quote Link to comment Share on other sites More sharing options...
1004ron Posted Saturday at 06:04 PM Report Share Posted Saturday at 06:04 PM On 10/31/2026 at 12:13 PM, 1004ron said: If the alternator is working I don't see how the bad battery will cause the symptoms you describe. 1 hour ago, Summers22 said: Update, new battery produced same results. She checked with her salesman and he said bring it in and they will look at it. Thats when she told me she bought an extended warranty and hopes its covered (she "forgot" to tell me that after days of me running my own diagnostics and google research). I told her I would pay any diagnostic fee and deductible. Turns out they diagnosed ot as needing a new transmission, $100 is all she is paying and they gave her a loaner. Said they have no clue on timeframe for replacement..... And a failed transmission too does not match the symptoms you describe. Quote Link to comment Share on other sites More sharing options...
Summers22 Posted 23 hours ago Author Report Share Posted 23 hours ago Well those are the symptoms as I drove the car as well and those are the codes I pulled. After 2 days of diagnostics, the dealer determined it needs a new transmission. Quote Link to comment Share on other sites More sharing options...
STBEAST Posted 10 hours ago Report Share Posted 10 hours ago Something doesn't sound right. Is this a Ford dealership that is telling you this? What extended warranty do you actually have? Seems like there are a few red flags. 1 Quote Link to comment Share on other sites More sharing options...
1004ron Posted 8 hours ago Report Share Posted 8 hours ago 1 hour ago, STBEAST said: Something doesn't sound right. Is this a Ford dealership that is telling you this? What extended warranty do you actually have? Seems like there are a few red flags. I'm confident that its not a Ford Dealership. Quote Link to comment Share on other sites More sharing options...
Summers22 Posted 40 minutes ago Author Report Share Posted 40 minutes ago It is Laird Noller Ford, Topeka KS and they are covering it 100% besides her $100 deductible. Quote Link to comment Share on other sites More sharing options...
1004ron Posted 14 minutes ago Report Share Posted 14 minutes ago That's good for you and your daughter with it being a reputable Ford dealership and the extended warranty company. Wouldn't trust O'Reilly for diagnostics in the future. Quote Link to comment Share on other sites More sharing options...
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