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U060D Lost Communication With Turbocharger/Supercharger Boost Sensor C

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

A third boost sensor C appears only on complex charging layouts, for instance sequential or two-stage turbo systems with pressure taps between and after the stages, or engines that add an electric compressor. U060D reports that the controller has lost the digital link to this sensor: no SENT frame inside the expected time, a frame failing its check, or a sensor that transmits only its reserved error value, a feature found on pressure chips such as Melexis' MLX90818. No manufacturer documents U060D publicly, so its use rests on the CARB 1968.2 requirement and the pattern of U060B. Which physical sensor is called C is a manufacturer decision. P25F2 to P25F5 cover the analog circuit of the same sensor. Expect boost to be limited on the affected stage.

Likely causes

Open or shorted SENT, supply or ground wire to sensor C
Sensor C sending only its error value
Corroded connector at sensor C

Symptoms

  • Check engine light
  • Power loss when the affected stage would build boost

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 csensor wiring

Related codes

P25F2P25F3P25F4P25F5U060BU060C

References: law.cornell.edu, media.melexis.com.