CUSTOMER CONCERN The engine will not crank after engine replacement and DTCs P1B06, P1B05, and P1AE2 are stored. CAUSE Inspection confirmed the high-voltage battery disconnect lever was broken during the disconnect procedure, leaving the interlock circuit open. CORRECTION Remove and replace the high-voltage battery disconnect lever, fully seat the interlock components, clear the DTCs, and verify the engine cranks.

CUSTOMER CONCERN The check engine light is on with DTCs P0AC4 and P183E stored. CAUSE Transmission range data confirmed an internal mode switch that did not report the selected gear range correctly. CORRECTION Remove and replace the transmission internal mode switch.

CUSTOMER CONCERN Customer states the oil-pressure warning light comes on while the engine is running. DTC P0521 is stored. CAUSE Mechanical oil-pressure testing remained normal while scan-tool pressure stayed low, confirming a failed engine oil-pressure sending unit. CORRECTION Remove and replace engine oil-pressure sending unit and inspect or replace the sender screen. Clear DTC P0521 and verify the warning light remains off with stable pressure readings.

CUSTOMER CONCERN Customer states the airbag warning light comes on intermittently after the driver seat-belt pretensioner was replaced. SDM DTC B0015-0D is stored. CAUSE Inspection at the driver-side B-pillar confirmed poor terminal contact at the driver seat-belt pretensioner connector and its connector-position assurance device. CORRECTION Repair driver seat-belt pretensioner connector terminals and secure the connector-position assurance device. Clear DTC B0015-0D and veri

CUSTOMER CONCERN Customer states the engine runs rough and enters reduced-power operation. DTC P0121 is stored. CAUSE Throttle-position data and connector-terminal testing confirmed an internal throttle-body position-sensor fault. CORRECTION Remove and replace throttle-body assembly. Perform idle-learn reset, clear DTC P0121 and verify throttle response and normal power.

CUSTOMER CONCERN Customer states the engine stalls when stopping instead of completing a normal Auto Stop. Multiple ECM, HPCM and TCM communication DTCs are stored. CAUSE Inspection following bulletin 08-07-30-021H confirmed chafed high-speed CAN wiring causing intermittent module communication loss. CORRECTION Repair chafed high-speed CAN wiring and protect harness from repeat contact. Clear communication DTCs and verify normal Auto Stop operation.