OBD Guide

U355B

Charge Air Cooler Outlet Pressure Sensor 2 Circuit

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Unstable engine idling
  • Increased fuel consumption
  • Turbocharging does not work correctly

Causes

  • Open or short circuit in the sensor circuit
  • Malfunction of the pressure sensor itself
  • Poor contact in the sensor connector
  • Wiring harness damage
  • Problems with the engine ECU

How to Fix

  1. Check the integrity of the sensor wires and connectors
  2. Test the pressure sensor with a multimeter
  3. Check for breaks and short circuits in the circuit
  4. Replace the faulty sensor if necessary
  5. Reset error code after repair

Related codes

Error U355B by Vehicle Brand