P2021

Symptoms

• Check Engine light comes on
• Reduced engine power
• Increased fuel consumption
• Unstable engine idling
• The engine goes into emergency mode

Causes

• Malfunction of the intake manifold flap position sensor
• Open or short circuit in the sensor circuit
• Poor contact in the sensor connector
• Wiring harness damage
• Problems with the engine control unit

How to Fix

1. Check the integrity of the sensor circuit
2. Inspect connectors and contacts for oxidation or damage
3. Check sensor resistance and reference voltage
4. Replace the damper position sensor if necessary
5. Clean or replace damaged wires

Related codes

Error P2021 by Vehicle Brand