Rear Parking Aid System Malfunction
The rear parking aid system has detected a malfunction.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The system that helps you park by detecting obstacles at the back of the vehicle is not working right.
What the computer is actually seeing
The parking aid control module receives signals from ultrasonic sensors that detect distances from obstacles. If the control module sees irregular signals or no signals at all for a set duration (usually more than 1 second), it'll trigger this code.
What a healthy reading looks like
The sensors should produce a voltage reading while active; expect around 5V when the sensors are powered on. Each sensor should also produce a pulse feedback signal when detecting an object, typically within 10-30 cm range.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Inspect the ultrasonic sensors for physical damage or dirt obstructions.
- 22. Check the wiring and connectors for any signs of corrosion or damage.
- 33. Measure voltage at the ultrasonic sensors; expect around 5V with the ignition on.
- 44. If voltage is good, use a scan tool to check for additional codes or freeze frame data related to the system.
- 55. Test each sensor individually with a multimeter; verify that they output the correct voltage and detect distances accurately.
- 66. If all sensors and wiring check out, consider testing or replacing the parking aid control module.
Common causes
- Faulty ultrasonic sensors
- Broken or corroded wiring/connectors
- Failed parking aid control module
- Interference from other electronic components
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code present?
Yes, but be cautious while reversing, as the parking aid system won't assist in detecting obstacles.
Will this fault come back after I clear it?
It may return if the underlying issue isn't fixed, like a bad sensor or wiring problem.
Why does the parking aid malfunction when I turn on the radio?
In some vehicles, electronic interference from the radio can affect sensor signals, so check for grounding issues.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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