Hours: 07–23 daily

TuningBot DTC Database · v4.37.14

U02AD Lost Communication With Turbocharger/Supercharger Boost Control B

Generic (OBD-II) interpretation in the TuningBot DTC database.

U · NetworkEngineOBD2

What U02AD means

U02AD
Lost Communication With Turbocharger/Supercharger Boost Control B Generic · engine Data confidence 65%

The control module stopped receiving expected network messages from the Turbocharger/Supercharger Boost Control B node on the vehicle communication bus.

Symptoms

  • Possible reduced power or limp mode
  • MIL illuminated
  • Possible abnormal turbocharger noise

Possible causes

  • Turbocharger actuator or position sensor fault
  • Sticking variable geometry mechanism
  • Charge-air or vacuum leak
  • Wiring or connector fault

Recommended checks

  • Compare specified vs actual boost with live data
  • Check actuator movement over the full range
  • Check hoses and vacuum lines
  • Inspect wiring and connectors

Related and nearby codes

How to read U02AD

U

Network: communication between control units.

0

Generic SAE-standard code: same meaning on every make.

2AD

Specific fault index within the subsystem.

Frequently asked questions about U02AD

What does U02AD mean?

Lost Communication With Turbocharger/Supercharger Boost Control B. The control module stopped receiving expected network messages from the Turbocharger/Supercharger Boost Control B node on the vehicle communication bus.

Is U02AD generic or manufacturer-specific?

U02AD is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove U02AD at file level?

Not guaranteed. Powertrain (P) codes can be reliably disabled in the ECU calibration, but body, chassis and network codes depend on the specific control unit and how the fault is implemented - some can be handled, some cannot. Ask for a quote and our engineers will check your file and tell you, free of charge, whether U02AD is removable in your case.

Other file services

ECU tuningDyno-tested results by model and engine See the results →

← Search the full DTC database