Crankshaft Position Sensor 'A' Circuit Range/Performance

On 10/4/26 my 2025 Ram 1500 with less than 15k miles experienced a major electrical/electronic failure. Multiple systems malfunctioned simultaneously while driving at freeway speeds, the vehicle decelerated rapidly, and then it would not shut off. Diagnostic codes included P0335, P0336, P034B, U0901, and U0422, including faults involving communication between vehicle and control models. This is the second significant electrical incident. Previously, electronic components activated abnormally while the vehicle was parking, including lights/wipers, and the battery became discharged even though the battery tested good. This failure left the vehicle completely immobilized approximately 60 miles…

I own a 2015 Jeep Grand Cherokee Summit 4x4 with the 3.0L EcoDiesel, with approximately 113,170 miles. The vehicle has experienced multiple intermittent episodes of “Service Electronic Throttle Control.” During the most recent episode, the vehicle briefly jerked/lurched forward and then experienced a significant loss of engine power/boost. I scanned the vehicle and found DTC P0336 (Crankshaft Position Sensor A Performance, intermittent). Clearing the code temporarily restored normal operation, but the fault later returned. During the most recent recurrence, the engine also cranked noticeably longer than normal before starting. FCA previously issued safety recall W79 concerning loss of…

Lost power while driving for 30 seconds. While on the interstate. Now truck battery has to be jumped to start. Dashboard giving out random codes. Check 4x4, check DEF( def is still at half full), check trailer( no trailer is connected) Took to dealership, 4 active codes P0336, P12A6, U029D, U029E. Test failed since code cleared U18D7, U18FE Current codes C1596, C15AC

…Upon scanning the vehicle for DTC’s you may find one or more of the following: P2453, P2454, P0335, P0336, P242B, P242C, U0074, U11C3. Diagnosis: Inspect the wiring harness near connector XY230A leading down to the transmission. The harness routing may allow the wiring to make contact with the sharp edge of the DPF gasket flange. It has also been found that the wiring harness could be routed close to the exhaust causing chaffing. Both of these situations could result in damage to the harness and a potential open or short. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

On XXX the truck stopped while driving on the highway XXX going south. And I got two diagnostic codes: P0336 and P01401. I towed it to the dealer, and they refused to fix it. I would like to know why they would not fix the crankshaft position sensor and the tone wheel. My truck was purchased new at this dealer Central Avenue Dodge . The VIN# [XXX]. 2015 RAM 1500 ECODIESEL 3.0 Please advise. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

My Son just bought the car from a private party. On our way home the engine light and a lightning bolt icon illuminated on the dash, followed by the vehicle going into limp mode. We had the vehicle scanned for codes and it came back with P0336 (crankshaft position sensor performance). After much investigation online, we found out that this is a known issue with the crankshaft position sensor and, most importantly, the tone wheel on the back of the engine. We looked up recalls on the vehicle and found a safety recall had been issued. While some vehicles affected received replacement of the tone wheel and sensor, others just received a software update. This particular vehicle received the…

My 2018 Ram 1500 Ecodiesel failed during acceleration on a busy freeway at 70 mph. I was able to avoid traffic and coast to the right shoulder. After paying for a tow, my scan tool called out four permanent codes: P0336, P061C, P062B, and U1401, proving the unsafe stall was directly caused by a delaminated or broken tone wheel. This failure is the root cause behind my open safety recall 66A. However, recall 66A only calls for a software fix and does not address my hard no-start condition. Since my Ram 1500 was manufactured in April of 2018 and the X94 warranty extension cut off date is March 26, 2018, I have no recourse to force FCA to address my failed tone wheel related to and actually the…

The engine and powertrain are affected by a defect described in Safety Recall 66A / NHTSA 23V-411 (loss of crankshaft position). Despite the recall software update being performed, my 2014 Jeep Grand Cherokee continues to display Diagnostic Trouble Code P0336 (Crankshaft Position Sensor Performance). This issue causes intermittent stalling, hard starts, and loss of engine power, which creates a serious risk of crash if the vehicle stalls while driving. The safety defect described in the recall — tone wheel magnetic material delamination leading to crankshaft signal loss — is still present. Two diagnostic reports (one from an FCA-authorized dealership and one from an independent mechanic)…

Driving and tried to pass a truck loss of power (dash lit up and no top-end) went to limp mode, Hard start upon starting and limp mode continues, code P0336 (crank sensor/reluctor wheel), on dash codes = service electric throttle control & service electronic stability control. Mileage = 110,000, Required service and maintenance completed at recommended intervals, regarding current codes cleaned all related sensors and throttle body, filters and no changes. symptoms are identical to 2019 model complaints. calling dealer regarding fuel system recall and this problem. (this is an estimated $2500 + repair by certified repair mechanic who states repair may fix for a year or less, but it is a…

On the highway my 2015 Jeep Grand Cherokee Diesel briefly stalled and the check engine light came on. I then lost all power and could only maintain a speed of 45MPH in a 70MPH speed limit highway. I turned on my flashers and could not get off the road due to construction and Jersey barriers for several miles. When I had the opportunity I pulled off the side of the road and called to have my vehicle towed to a service facility. I was informed by the mechanic that scanned my car for trouble codes, a P0336-00 was set in my PCM. The mechanic informed me that I would have to take the vehicle to a Jeep Chrysler dealer. This is apparently a known issue with 2014 to 2018 Jeep Grad Cherokees equipped…