2017 Chrysler Pacifica fuel/propulsion system problems

“On 8/16/26, my 2017 Chrysler Pacifica Hybrid would not start after being parked for several hours in an underground parking structure in downtown Detroit during a baseball game. There were no warnings before the failure. The vehicle was towed to Serra Lake Orion at a cost of about $700. The dealer found diagnostic trouble code P0AA1 (hybrid/EV battery positive contactor circuit). The high-voltage system is locked down and the vehicle cannot be started or driven. The vehicle has been at the dealer since August 18, 2026, and as of 10/1/26 has been out of service for about 6 weeks. The dealer has an open Chrysler STAR technical support case (102974656) seeking approval to replace the high-voltage battery, and the process has involved repeated requests for additional testing. I have been given loaner vehicles during this time but am approaching the mileage limit on the second. The vehicle has about 220,000 miles and I have owned it since August 2017. It has no open recalls. It previously received recall repair work on the hybrid system, including the power inverter module recall (Chrysler T34 / NHTSA 17V-371), which included reprogramming of the battery pack…”

“Under safety recall 73B, for which I had the software update done last year (nothing noted by the dealer). I have since had intermittent check engine light issues, and even had the vehicle completely shut off last winter for 10 minutes in the middle of the road. It subsequently turned on, and when brought in I was told there were no "current codes" in the system to investigate. I've now had check engine light on steady for a couple months. There are historical codes U029A-00 (lost communication with hybrid battery pack sensor module), U0412-00 (invalid data received from battery energy control module A), and current code P1D43-00 (internal control module shut off test monitoring time error). With these relating to the battery pack control module ("BPCM") and hybrid control processor, it is quite apparent that there is an issue with the BPCM and that the lack of communication and errors on the shut off test monitoring that the BPCM is malfunctioning which could cause a number of issues, such as a fire per safety recall 73B. I was told by the manufacturer that there is a 2-year period to remedy safety recall work. As this was a software update, it would appear…”

“While driving at highway speed, my 2017 Chrysler Pacifica PHEV suddenly entered limp mode, displaying a red turtle warning light and red battery icon, and lost propulsion. My family was forced to pull onto the shoulder of a busy expressway, creating an immediate safety risk to occupants and other drivers. The vehicle was towed to an authorized Chrysler dealership where it has remained for nearly four weeks. A wiTECH scan confirmed the Battery Pack Control Module is showing as unprogrammed. A second scan three weeks later confirmed the BPCM remains unprogrammed and three active DTCs are present. The dealership has confirmed these findings but is attempting to release the vehicle in this condition. Records show Recall 03A for loss of motive power was previously performed on this vehicle. The same symptoms have recurred, suggesting the recall remedy may not have been effective. The dealership is denying warranty coverage while refusing to program the BPCM that would confirm or deny that coverage. Stellantis customer care has closed my case twice without resolution. I have formally refused pickup on safety grounds.”

“My 2017 Chrysler Pacifica Hybrid entered limp mode and was taken to Central Florida Chrysler Dodge on XXX. The service advisor, [XXX], identified three recalls, which needed to be completed, after claiming they had completed them, the issue persisted. I authorized a coolant flush without being informed it involved the battery cooling system. Further diagnostics revealed a failed hybrid battery. However, Chrysler denied the battery replacement claim, citing contamination from “incorrect” coolant. I dispute this reasoning, as I was not properly informed about the coolant issue and believe there is no proof that it caused the battery failure. Under the Magnuson-Moss Warranty Act, a warranty or recall claim cannot be denied without clear evidence linking the fluid to the failure. I have opened a case with Chrysler (Case #XXX) and am requesting that the battery replacement be honored under the recall, especially since recall guidelines indicate that unresolved issues after software updates may require component replacement. After a days of back and forth, not the dealership claims the PIM is not the original part of the vehicle and for that reason it would be…”

“My 2017 Chrysler Pacifica experienced repeated engine timing and oil system failures. The vehicle first developed a check engine light and engine timing code (P000D – camshaft position slow response). The vehicle was inspected by a dealership service department. Shortly after, a major engine oil leak was discovered from the oil cooler / oil filter adapter assembly. The vehicle required repair of the oil cooler assembly and associated seals. After that repair, the vehicle continued to experience engine timing issues. The dealership later confirmed failure of the cam phaser components associated with the engine timing system and performed a repair. Within days of the repair, the check engine light and engine timing code returned again. The failure involves the engine valve timing system and oil pressure dependent components based on Autozone code check. Improper camshaft timing can affect engine operation, cause loss of power, rough running, or possible engine stall while driving, which creates a safety risk in traffic. The issue has been inspected and confirmed by a dealership service department. The vehicle is available for inspection upon request.”

“I experienced a check engine light and intermittent starting issues with my vehicle (Chrysler Pacifica Hybrid 2017). [XXX] At times, the vehicle would not start, but after some time it could start again. After researching the issue online, I found that there are active safety recalls for this vehicle related to the hybrid system (including battery and inverter/PIM). I immediately contacted the dealer: [XXX] An appointment was scheduled for April 1, 2026 at 4:00 PM. I dropped off the vehicle at approximately 3:50 PM and handed over the keys. Prior to visiting the dealer, I purchased a diagnostic subscription tool to better understand the issue, as many owners report dealers misdiagnosing these problems. The diagnostic results indicated issues related to the PIM (Power Inverter Module), including required updates and possible internal diode failure. This matches the symptoms I experienced, where the vehicle would intermittently fail to start. I have attached photos showing error messages related to PIM update and hybrid system faults. On the next day, the dealer informed me that they would only perform a diagnostic for $180 instead of processing the issue under…”