P1A77 · Herstellerinformationen

KIA · 2023-03-06

TECHNICAL SERVICE BULLETIN: MQ4 P/HEV GAMMA 1.6L T-GDI ECM & HCULDC LOGIC IMPROVEMENT FOR OIL DILUTION: This bulletin provides the procedure to update the software logic of the 'Engine' and Hybrid Control Unit Low DC-DC Converter 'HCULDC' systems on certain 2021-2023MY Sorento HEV, PHEV (MQ4 P/HEV) w/ Gamma 1.6L T-GDI vehicles produced from July 1, 2021 through November 3, 2022. The affected vehicles may exhibit a MIL 'ON' with DTCs stored (P144100, P1A7795, P00B700, P211800, P040100, P023600, P029900, P2B6000) due to the engine oil becoming diluted with fuel and/or moisture caused by repeated short drive trips, in low outdoor temperature (32 degree F-) environments.

HYUNDAI · 2023-02-27

This bulletin provides information related to the Engine Control Module (ECM) software update for Santa Fe Hybrid (TM HEV) / Santa Fe Plug-In Hybrid (TM PHEV) vehicles to revise the following DTC logic: • P1441(PCSV rear and hose missing) • P1A77(HSG Belt slip) • P00B7(Excessive ITM motor operating current) • P2118 (ETC target position failure) • P0401 (EGR gas flow insufficient) • P0236 (Turbocharger boost sensor range abnormal) • P0299 (Turbocharger boost pressure too low)

HYUNDAI · 2023-02-16

This bulletin provides information related to the Engine Control Module (ECM) / Hybrid Control Unit (HCU) software update for Tucson Hybrid (NX4 HEV) / Plug-in Hybrid (NX4 PHEV) vehicles to improve the following DTC and symptoms: 1. P1441 (EVAP System Flow During Non-Purge Condition) a. Misdiagnosis due to insufficient margin of pressure deviation when driving at constant speed with low engine load i. Logic improvement to eliminate misdiagnosis 2. P1A77 (Check Generator Belt) a. Misdiagnosis due to poor synchronization release when the engine is stopped i. Logic improvement to release synchronization even if CAM signal is active when engine is stopped 3. P00B7 (Engine Coolant Flow Low/Performance) a. ITM control error due to temporary ball valve stuck i. Improvement to ITM cleaning logic…

HYUNDAI · 2022-06-03

This bulletin provides information related to the Engine Control Module (ECM) software update for Santa Fe Hybrid (TM HEV) / Santa Fe Plug-In Hybrid (TM PHEV) and Tucson Hybrid (NX4 HEV) / Tucson Plug-In Hybrid (NX4 PHEV) vehicles to revise the following DTC logic: • P1441(PCSV rear and hose missing) • P1A77(HSG Belt slip) • P00B7(Excessive ITM motor operating current) • P2118 (ETC target position failure) • P0401 (EGR gas flow insufficient) • P0236 (Turbocharger boost sensor range abnormal) • P0299 (Turbocharger boost pressure too low)