Technical Service Bulletin 1805022REVA — 2021 CHRYSLER PACIFICA PLUG-IN HYBRID

Flash: Powertrain Control Module (PCM) Updates This bulletin involves updating the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, the technician may notice one or more of the following DTCs have been set: P1AC6-00 - MCPA Crankshaft Position Signal Sensor Performance. P0335 - Crankshaft Position Sensor Circuit. P0339 - Crankshaft Position Sensor Intermittent. P0031 - O2 Sensor 1/1 Heater Circuit Low. P0032 - O2 Sensor 1/1 Heater Circuit High. P0037 - O2 Sensor 1/2 Heater Circuit Low. P0038 - O2 Sensor 1/2 Heater Circuit High. P0051 - O2 Sensor 2/1 Heater Circuit Low. P0052 - O2 Sensor 2/1 Heater Circuit High. P0057 - O2 Sensor 2/2 Heater Circuit Low. P0058 - O2 Sensor 2/2 Heater Circuit High. P0340 - Camshaft Position Sensor Circuit - Bank 1 Sensor A. P0345 - Camshaft Position Sensor Circuit - Bank 2 Sensor A. P0365 - Camshaft Position Sensor Circuit - Bank 1 Sensor B. P0390 - Camshaft Position Sensor Circuit - Bank 2 Sensor B. The following modules need to be flashed for this update to be effective, the following modules are all to be updated along with this PCM update:Hybrid Control Processor (HCP) and Auxiliary Hybrid Control Processor (AHCP) or also known as Power Inverter Module (PIM).