Network, generic

U045F Invalid Data Received From Automated Driving System Interface Module A

Check engine lightUsually off

EmissionsNot relevant

Drive cycleNot required

Limp modePossible

Interface module A sits between an automated driving computer and the base vehicle: it turns the computer's steering, braking and propulsion requests into commands the vehicle's own controllers accept and reports their state back. Bosch places this act layer at the end of its sense-think-act chain. U045F is set when the automation computer or an actuator controller receives frames from interface A that fail checks such as alive counter, CRC or timing, the mechanisms AUTOSAR standardises for end-to-end protection; U015E means interface A is no longer heard. No manufacturer documents U045F publicly. Since the computer can no longer trust what reaches the actuators, it must disengage or, at higher SAE J3016 levels, bring the car to a minimal-risk stop and hand back to the driver. Manual driving remains possible.

Likely causes

Software of interface module A not matching the automation computer or actuator controllers

Connector, bus wiring or supply fault at interface A

Internal fault of interface module A

Symptoms

Automated driving or advanced assistance refuses to engage
Takeover request or warning to the driver

Repair estimate

DifficultyShop_onlyWorkshop job

Parts and labour€100–1,500

Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

ads interface module a

Related codes

U015E U0460 U045D

References: bosch-mobility.com, autosar.org, en.wikipedia.org.