P2398

Diesel Intake Air Flow B Position Sensor Circuit Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Reduced engine power
Increased fuel consumption
Problems starting the engine
Check Engine Light Is On
Unstable engine idling

Causes

Air flow position sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Wiring Harness Problems
Engine control unit malfunction

How to Fix

Check the integrity of the sensor circuit
Inspect the sensor connector and contacts
Check the functionality of the sensor
Replace sensor if necessary
Check and update the ECU firmware if necessary

Related codes

P2397 P2399 P2400