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.