U0655
Lost Communication With Diesel Intake Air Flow B Position Sensor
U0655 is an OBD-II diagnostic trouble code meaning: Lost Communication With Diesel Intake Air Flow B Position Sensor. Common causes: open or short circuit in the sensor circuit, air flow sensor b malfunction. Estimated repair cost: $33–167.
Symptoms
- Reduced engine power
- Increased fuel consumption
- Rough idling
- Check Engine Light Is On
- Switching to emergency mode
Causes
- Open or short circuit in the sensor circuit
- Air Flow Sensor B Malfunction
- Problems with the sensor connector
- Engine control module (ECU) malfunction
- Wiring harness damage
How to Fix
- Check the integrity of the sensor wires and connectors
- Check the voltage and resistance of the sensor according to the specification
- Replace faulty air flow sensor B
- Check and replace wiring harness if necessary
- If there are no results, perform ECU diagnostics
Related codes
Error U0655 by Vehicle Brand
FAQ
What does the U0655 code mean?
U0655 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Diesel Intake Air Flow B Position Sensor
What causes a U0655 error code?
The most common causes of U0655 include: Open or short circuit in the sensor circuit; Air Flow Sensor B Malfunction; Problems with the sensor connector; Engine control module (ECU) malfunction.
How do I fix a U0655 diagnostic trouble code?
To fix U0655: Check the integrity of the sensor wires and connectors. Check the voltage and resistance of the sensor according to the specification. Replace faulty air flow sensor B. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0655?
Yes, but get it checked soon
How much does it cost to fix U0655?
The estimated repair cost for U0655 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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