Network, generic

U060C Lost Communication With Turbocharger/Supercharger Boost Sensor B

Check engine lightOn

EmissionsRelevant

Drive cycleNot required

Limp modePossible

Boost sensor B is needed where charge pressure is measured twice: on twin-turbo V engines with one charge path per bank, on two-stage systems between the stages, or after the charge air cooler in addition to sensor A. When it is a digital SENT device, its frames carry pressure, often a temperature value, a status nibble and a CRC. U060C sets when those frames from sensor B are missing, corrupt or flagged as invalid by the sensor itself. No manufacturer documents this code publicly; the logic follows Audi's bulletin for U060B and the CARB 1968.2 rule that lost communication on a digital input needs its own code. P0239 to P0242 are the analog counterparts, and P023E compares sensor B with manifold pressure. The controller usually limits boost on that branch.

Likely causes

Damaged wiring to boost sensor B, often near hot turbo plumbing

Boost sensor B electronics failed

Loose or oil-soaked connector at sensor B

Symptoms

Check engine light
Reduced power with boost limited

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 bsensor wiring

References: law.cornell.edu, infineon.com.