U0159Lost Communication With Parking Assist Control Module A
- Generic OBD-II code · Network
- How the car detects it
- U0159 reports that parking assist control module A, which evaluates the ultrasonic sensors and drives the distance warnings, has fallen silent. GM spells out the check for the brake module: the 2019 Cadillac XT4 EBCM (19OBDG03D) and the 2020 brake module tables (20OBDG03C) set it when the automatic-parking braking request is missing for more than 0.25 s, Type C, no MIL. GM bulletins PIT5507E (2014-2018 full-size trucks and SUVs) and 20-NA-099 (CT6) cure start-up U0159 entries with new park assist software. Ford SSM 51486 (2023 Super Duty) and VW TSB 01-24-02 (2024 ID.4) treat it as a harmless ABS entry; Stellantis S2108000149 asks for module updates. Park assist then switches off.
- What you may notice
- Park assist unavailable or Service Parking Assist message
- Park assist switch cannot turn the system on or off
- Code stored in brake module, cluster or BCM
- Likely causes
- LikelyPark assist module software fault, fixed by reprogramming (GM PIT5507E, 20-NA-099)
- PossibleModules on different software levels (Stellantis S2108000149)
- PossiblePark assist module without power or ground
- RareHarmless entry after remote start or wake-up (Ford, VW)
- RareBus line or connector in the bumper/rear area damaged
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.