OBD-II code · generic
P239D
Diesel Intake Air Flow B Control System - Low Air Flow Detected
- System
- P2 — Powertrain / emissions (generic)
- Severity
- High (4/5)
- Can I keep driving?
- Drive with caution
What does P239D mean?
P239D is defined as “Diesel Intake Air Flow B Control System - Low Air Flow Detected”.
Drive gently and only as far as you need to; have it checked as soon as possible.
Related codes
- P239CDiesel Intake Air Flow B Control System - High Air Flow Detected
- P239BDiesel Intake Air Flow B Control Motor Current Range/Performance
- P239ADiesel Intake Air Flow B Position Sensor Circuit Intermittent/Erratic
- P2399Diesel Intake Air Flow B Position Sensor Circuit High
- P2398Diesel Intake Air Flow B Position Sensor Circuit Low
- P23A2Exhaust Heat Exchanger Exhaust Bypass Valve B Control Circuit/Open
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This page is general information; an exact diagnosis needs measurements and a technician’s check.