{"nhtsa_id":10230133,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-01-17","date":"2021-05-22","document_id":"1805121","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN; EXTERIOR LIGHTING; BACK OVER PREVENTION; ELECTRICAL SYSTEM","mfr_system":null,"summary":"Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (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. 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).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10230133-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10230133-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10230133","components":[{"id":"driver-assistance","name":"Driver assistance","parent":null},{"id":"electrical","name":"Electrical system","parent":null},{"id":"lighting","name":"Lighting","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"backup-camera","name":"Backup camera","parent":"driver-assistance"}],"codes":["P0031","P0032","P0037","P0038","P0051","P0052","P0057","P0058","P0335","P0339","P1AC6"],"topics":[],"vehicles":[{"make":"CHRYSLER","model":"PACIFICA","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_chrysler_pacifica"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}