C0034Średni
Airmatic — czujnik poziomu przedni lewy poza zakresem (Mercedes)
Podwozie
Sprawdź szczegóły →U1035
WysokiCAN Communication Error with ABS/ESP Module — Incorrect or Inconsistent Data Frames, Transmission Delays, or Software Version Mismatch of Brake and Traction Control Modules
OBD-II (EN): Communication Error with ABS/ESP Module
Code U1035 signals a communication problem on the CAN network between the central control unit and the ABS/ESP module – this could mean a damaged wire, oxidized connector, or software error. This fault directly affects the braking and traction control systems, requiring prompt diagnosis. A visit to an authorized service center with a suitable diagnostic scanner is recommended.
Symptoms
ABS and/or ESP warning light on dashboard illuminated or flashing; ESP/ASR system may be inactive or malfunctioning; possible reduced braking performance or assist deactivation; OBD scanner shows no communication or CAN frame errors from ABS/ESP module; vehicle may limit maximum speed or enter limp mode.
Possible causes
• Damaged or oxidized CAN wiring connector to ABS/ESP module • Open or short circuit in CAN bus wires (CAN High / CAN Low) • Faulty or damaged ABS/ESP module (internal hardware error) • Software (firmware) version mismatch between ABS/ESP module and central control unit • Electromagnetic interference or faulty CAN bus terminating resistor
Affected systems
Related codes
U1000Krytyczny
Brak komunikacji z bramką sieciową (gateway)
Komunikacja sieciowa
Sprawdź szczegóły →U0121Wysoki
Utrata komunikacji z modułem ABS
Komunikacja sieciowa
Sprawdź szczegóły →Does code U1035 require professional diagnostics?
The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.