P239B

Diesel Intake Air Flow B Control Motor Current Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–167 (est.)

Symptoms

Reduced engine power
Increased fuel consumption
Rough engine operation
Check Engine Light Illuminates
Car dynamics problems

Causes

Malfunction of the air flow control motor
Wiring problems (open or short circuit)
Engine control unit malfunction
Mechanical damage to the air flow control system
Poor contact in connectors

How to Fix

Check the condition of the air flow control motor
Check the integrity of wiring and connectors
Test the operation of the engine control unit
Check the mechanical components of the system
Replace faulty components

Related codes

P239A P239C P239D