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U060B Lost Communication With Turbocharger/Supercharger Boost Sensor A

Check engine lightOn

EmissionsRelevant

Drive cycleNot required

Limp modePossible

Boost sensor A measures charge air pressure after the compressor and is often a SENT pressure sensor with built-in temperature measurement. U060B means the engine controller no longer hears from it. Audi documents the code for the 2022 to 2025 Q5 and SQ5 family (bulletin 2074392): the MIL comes on and the engine control unit stores U060B00 against G31, the boost pressure sender, either intermittent or static. Engine vibration can break the three wires right at the sender connector, which may only show once the terminals are unpinned or the tape is removed; the fix is a new pigtail with set lengths, and production changed from January 2025. P0235 to P0238 cover an analog sensor's circuit faults. Boost control falls back to a safe low level.

Likely causes

Wires broken by vibration right behind the sensor connector

Boost sensor electronics failed

Loose terminal or oil in the connector

Symptoms

Check engine light
Noticeably less power, boost held low
Fault may come and go with engine vibration

Repair estimate

DifficultyMediumDIY possible

Parts and labour€40–350

Time0.5–2 h

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

Parts involved

boost pressure sensor asensor wiring

References: static.nhtsa.gov, static.nhtsa.gov, infineon.com.