Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnostic Trouble Code (DTC) Displaying
This vehicle is equipped with an on-board diagnostic display feature capable of displaying diagnostic trouble codes using the 3 indicators on the rear parking assist display. After the bulb check has been completed, the red outside indicator flashes to indicate a malfunction with the system. The module disables operation of the URPA system under this condition.
In order to enter the diagnostic mode, complete the following actions:
- With the ignition turned OFF, short the rear parking assist diagnostic connector to ground while the vehicle is in PARK. For the location of the rear parking assist (RPA) diagnostic connector, refer to Object Detection Component Views .
- Turn ON the ignition.
- Place foot on the brake.
- Shift the vehicle into REVERSE within 5 seconds.
If the vehicle is not shifted into reverse within 5 seconds after turning the ignition ON, the diagnostic mode will still be initiated. However, a reverse input wiring fault will be registered as sequence #7 as shown in the Diagnostic Indicator table below. Refer to Diagnostic Trouble Code (DTC) Clearing for the specific steps on how to clear diagnostic trouble codes. After the reverse input wiring code is cleared, repeat the diagnostic trouble code displaying steps in order to enter the diagnostic mode.
When the diagnostic mode is first entered, the rear parking assist display displays the amber outside indicator and the red outside indicator. Then, the indicators on the rear parking assist display will display one or more of the sequences in the table below to indicate where the fault exists within the rear parking assist system. Refer to Diagnostic Trouble Code (DTC) Clearing for the specific steps on how to clear diagnostic trouble codes.
| # | State/Fault Location | Amber Outside | Amber Middle | Red Outside | Flashing |
|---|---|---|---|---|---|
| 1 | Start of Diagnostics | X | - | X | - |
| 2 | RR Corner Object Sensor and Wiring | X | - | - | - |
| 3 | RR Middle Object Sensor and Wiring | X | X | - | - |
| 4 | LR Middle Object Sensor and Wiring | - | X | X | - |
| 5 | LR Corner Object Sensor and Wiring | - | - | X | - |
| 6 | Chime Warning Wiring | - | X | - | - |
| 7 | Reverse Input Wiring | - | X | - | X |
| 8 |
IMPORTANT:
This diagnostic pattern sets for an open sensor supply voltage circuit and sensor low reference circuit. Sensor Supply Voltage Circuit and Sensor Low Reference CircuitSensor Supply Voltage Circuit and Sensor Low Reference Circuit |
X | X | X | X Flashes in the following sequence:
|
| 9 |
IMPORTANT:
This diagnostic pattern sets for a short to ground in the sensor supply voltage circuit. Sensor Supply Voltage Circuit |
X | X | X | - |
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.