P209E

Symptoms

• Check Engine light comes on
• Reduced engine power
• Increased fuel consumption
• Problems with the SCR system
• Possible engine operating mode restrictions

Causes

• Malfunction of the reagent injection air pressure sensor
• Damage to the wiring to the sensors
• Dirty or clogged air passages
• Problems with the SCR control unit
• Mechanical damage to the injection system

How to Fix

1. Check pressure sensor readings using diagnostic equipment
2. Inspect the wiring and sensor connectors for damage
3. Check air ducts for blockages
4. If necessary, replace the faulty sensor
5. Check the operation of the SCR system

Related codes

Error P209E by Vehicle Brand