CUSTOMER CONCERN The electric parking brake is stuck on or will not apply, with a parking-brake motor circuit fault. CAUSE The confirmed repair found the parking-brake motor connector terminals reversed, causing the motor to run in the wrong direction. CORRECTION Correct the parking-brake motor connector terminal positions, clear the parking-brake fault, and verify normal apply and release operation.

CUSTOMER CONCERN The hybrid system stores isolation-fault DTCs P0AA6-49 and P1C80-49 for the rear motor area. CAUSE Corrosion in the high-voltage floor under-wire harness caused the documented isolation fault. CORRECTION Remove and replace the corroded high-voltage floor under-wire harness, clear DTCs P0AA6-49 and P1C80-49, and verify high-voltage isolation and hybrid-system operation.

CUSTOMER CONCERN After collision repairs and replacement of the front bumper and steering rack, the intuitive park-assist warning remains on and the EPS system stores U023A-87. CAUSE The replacement steering rack/EPS and clearance-warning system had not been fully configured, and the front ultrasonic-sensor angles had not been registered. CORRECTION Configure the EPS and clearance-warning ECU, perform front ultrasonic-sensor angle registration, clear U023A-87 and related Repo

CUSTOMER CONCERN After a driver-side wheel impact and suspension repairs, DTCs C1231, C1A47, and C1626 remain stored for the steering-angle system. CAUSE The steering-angle sensor was confirmed faulty after the collision damage. CORRECTION Remove and replace the failed steering-angle sensor, clear DTCs C1231, C1A47, and C1626, and verify steering-angle data and system operation.

CUSTOMER CONCERN A hybrid-system malfunction warning is displayed and DTCs C1241 and P1CCC96 are stored. CAUSE The DC/DC converter had an internal failure even though the 12-volt charging voltage measured 14.5 volts in READY mode. CORRECTION Remove and replace the failed DC/DC converter/inverter assembly, clear DTCs C1241 and P1CCC96, and verify 12-volt charging operation.

CUSTOMER CONCERN The malfunction indicator lamp is on with DTCs P0031, P0037, P0102, and P0403; the affected sensors and actuators receive only about 8.4 to 8.5 volts even though the EFI No. 2 fuse has 11.7 volts. CAUSE Terminal 4 was loose in connector DA2 at the engine-compartment fuse box, causing excessive voltage loss in the shared EFI No. 2 power circuit. CORRECTION Repair and tighten terminal 4 in connector DA2, clear DTCs P0031, P0037, P0102, and P0403, and verify bat

CUSTOMER CONCERN The engine will not respond normally and DTC P2118 is stored even though the ETCS fuse and throttle-body connector terminals appear serviceable. CAUSE The gray power-supply wire to terminal 3 of ECM connector A57 was corroded inside its insulation near the harness loom, leaving the ECM terminal without battery voltage. CORRECTION Repair the open gray power-supply wire to terminal 3 of ECM connector A57, clear DTC P2118, and verify the engine starts and runs n

CUSTOMER CONCERN The brake pedal is hard and DTCs C1253 and C1256 are stored after body repairs. CAUSE Rodent damage opened the brake-booster pump wiring at its connector, interrupting power to the ABS hydraulic modulator/pump assembly. CORRECTION Repair the rodent-damaged brake-booster pump wiring at the connector, clear DTCs C1253 and C1256, and verify normal brake operation.

CUSTOMER CONCERN After engine-harness replacement, the skid-control ECU stores DTCs C1252, C1253, C1256, and C1345. CAUSE The skid-control ECU with actuator failed after the brake-booster pump power, ground, and direct-operation checks. CORRECTION Remove and replace the failed skid-control ECU with actuator.

CUSTOMER CONCERN DTCs P0A39, P0A4C, and P0A4D are stored for the generator temperature and resolver circuits. CAUSE The hybrid-transmission wiring on top of the transaxle was damaged, opening or shorting the generator resolver circuit. CORRECTION Repair the damaged hybrid-transmission wiring on top of the transaxle.

CUSTOMER CONCERN The engine overheats and stores DTC P261B; the electric water pump reports approximately 6,000 rpm when commanded to 3,000 rpm. CAUSE The engine-coolant pump impeller loosened on its shaft, allowing the motor to overspeed without moving coolant correctly. CORRECTION Remove and replace the failed engine-coolant water pump.

CUSTOMER CONCERN The brake master-cylinder assembly is leaking. CAUSE The brake master-cylinder assembly had an external hydraulic leak. CORRECTION Remove and replace the leaking brake master cylinder, bleed the brake system, and perform the required stroke-sensor zero-point relearn.

CUSTOMER CONCERN The electric brake system stores DTC C1A61-01 for the brake-motor power supply. CAUSE A warped retaining tab at the battery fusible-link connector allowed the brake-motor power circuit to lose contact. CORRECTION Repair and reshape the damaged connector retaining tab at the battery fusible-link assembly, clear DTC C1A61-01, and verify brake-system operation.

CUSTOMER CONCERN The fuel-pump nozzle repeatedly shuts off while refueling, making the tank difficult to fill. CAUSE The canister vent solenoid remained restricted and prevented the fuel tank from venting through the EVAP canister during refueling. CORRECTION Remove and replace the restricted canister vent solenoid.

CUSTOMER CONCERN The 12-volt battery is discharged by morning because of an overnight parasitic draw. CAUSE A leaking sunroof drain hose allowed water into the body control module, causing internal corrosion and the electrical draw. CORRECTION Remove and replace the corroded body control module and repair the leaking sunroof drain hose.

CUSTOMER CONCERN The fuel tank is difficult to fill and DTC P04B4 indicates the refueling vapor valve is stuck closed. CAUSE The normally closed EVAP canister vent solenoid remained stuck shut when commanded open, preventing vapor from leaving the tank during refueling. CORRECTION Remove and replace the failed EVAP canister vent solenoid.

CUSTOMER CONCERN Wall charging is inoperative, the cooling fan and charge-port light ring do not operate when plugged in, and DTC P0C2A resets immediately after clearing. CAUSE The transmission-fluid auxiliary-pump circuits passed testing, confirming an internal pump failure. CORRECTION Remove and replace the failed transmission-fluid auxiliary pump.

CUSTOMER CONCERN The right turn signal remains on whenever the ignition is on, while the left signal does not respond to the multifunction switch but does flash with the hazard switch; SCCM DTC B1D36:09 returns immediately. CAUSE SCCM switch data changed to OFF when the multifunction switch was removed, confirming an internal switch failure. CORRECTION Remove and replace the failed multifunction switch.

CUSTOMER CONCERN The malfunction indicator lamp is on with DTC P0401 for insufficient EGR flow. CAUSE The EGR cooler was restricted and could not provide the commanded exhaust-gas flow. CORRECTION Remove and replace the restricted EGR cooler.

CUSTOMER CONCERN The IHKA heating and air-conditioning system is inoperative and multiple IHKA faults are stored. CAUSE The heat-pump control module failed after the related sensor, shutoff-valve, and wiring checks. CORRECTION Remove and replace the failed heat-pump control module, then program and code the replacement module to the vehicle.