Rear Parking Aid Sensor Fault
There's a problem with one of the rear parking sensors.
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 rear parking sensors help detect obstacles when backing up. If one fails, you won't get accurate signals, making it harder to park safely.
What the computer is actually seeing
The vehicle's computer monitors the electrical signals from each parking sensor. It looks for differences in voltage that indicate whether a sensor is operational.
What a healthy reading looks like
Normal sensor voltage should be around 5 volts DC when the system is active.
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 wiring and connectors for the rear parking sensors for any damage or corrosion. If damaged, repair or replace as necessary. Decision: Is wiring intact?
- 22. Using a multimeter, check the voltage at the sensor connector with the ignition on. You should see around 5 volts. Decision: Is voltage present?
- 33. If no voltage is present, trace the wires back to the module for continuity. Repair any breaks found. Decision: Are wires intact?
- 44. If voltage is present, test the sensor itself with a scan tool or multimeter while activating the system. If the sensor does not respond, it’s likely faulty. Decision: Is the sensor functioning?
- 55. Replace any faulty sensor and clear the fault code. Conduct a test drive to ensure fault code does not return. Decision: Is the fault code cleared?
Common causes
- Damaged wiring to the sensor
- Faulty parking aid sensor
- Corrosion in the connector
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
Yes, but be cautious while reversing as your parking sensors may not work correctly.
Will this fault code come back after I clear it?
If the issue is not resolved, the code is likely to return.
Why does this code pair with B1444 or B1446?
These codes are related to other sensors in the parking aid system and often indicate a common wiring or sensor issue.
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