Network, generic

U060A Lost Communication With Manifold Absolute Pressure Sensor B

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

MAP sensor B is a second manifold pressure sensor, found for example on V engines with a separate intake plenum per bank or on engines measuring before and after the throttle. U060A applies when this sensor is digitally connected and the controller stops receiving usable SENT frames from it, whether because of a dead line, a broken frame or the sensor's own error code; Melexis' MLX90818, made for manifold and turbo pressure, sends reserved fast-channel values to signal internal faults. No manufacturer publishes a readable description of this code. The NHTSA index lists it with U0609 in an Audi bulletin for the 2023 RS 6 Avant, but that file is not readable. CARB 1968.2 requires a stand-alone code for lost communication on a digital input. P2A0A to P2A0E are the analog codes.

Likely causes

Open, shorted or chafed wire to MAP sensor B
MAP sensor B electronics failed or reporting an internal error
Corroded or loose connector at sensor B

Symptoms

  • Check engine light
  • Reduced power on the affected bank or intake path

Repair estimate

DifficultyMediumDIY possible
Parts and labour€40–300
Time0.3–1.5 h

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

Parts involved

map sensor bsensor wiring

Related codes

P2A0AP2A0BP2A0CP2A0DP2A0EU0609

References: law.cornell.edu, media.melexis.com, en.wikipedia.org.