OBD Guide

U066E

Lost Communication With Charge Air Cooler Temperature Sensor Bank 2

U066E is an OBD-II diagnostic trouble code meaning: Lost Communication With Charge Air Cooler Temperature Sensor Bank 2. Common causes: open or short circuit in the sensor circuit, intercooler temperature sensor malfunction. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • Unstable engine operation
  • Errors in turbocharging operation

Causes

  • Open or short circuit in the sensor circuit
  • Intercooler temperature sensor malfunction
  • Connector problems or contact corrosion
  • Engine ECU malfunction
  • Wiring harness damage

How to Fix

  1. Check the integrity of the sensor circuit
  2. Inspect connectors and contacts for damage
  3. Check the resistance of the temperature sensor
  4. Replace intercooler temperature sensor if necessary
  5. Scan the CAN network for errors

Related codes

Error U066E by Vehicle Brand

FAQ

What does the U066E code mean?

U066E is an OBD-II diagnostic trouble code that indicates: Lost Communication With Charge Air Cooler Temperature Sensor Bank 2

What causes a U066E error code?

The most common causes of U066E include: Open or short circuit in the sensor circuit; Intercooler temperature sensor malfunction; Connector problems or contact corrosion; Engine ECU malfunction.

How do I fix a U066E diagnostic trouble code?

To fix U066E: Check the integrity of the sensor circuit. Inspect connectors and contacts for damage. Check the resistance of the temperature sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U066E?

Yes, but get it checked soon

How much does it cost to fix U066E?

The estimated repair cost for U066E is $17–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat