P21C0

Symptoms

• Unstable engine idling
• Increased fuel consumption
• Difficulty starting the engine, especially in cold weather
• Loss of engine power
• Increased emissions of harmful substances

Causes

• Malfunction of the fuel injector of cylinder 11
• Problems with the fuel pump or pressure regulator
• Contaminated or damaged fuel lines
• Malfunction of sensors that affect injection time (for example, coolant temperature sensor)
• Problems with the engine control unit (ECU)

How to Fix

1. Check the condition and operation of the fuel injector of cylinder 11
2. Check the pressure in the fuel system
3. Inspect fuel lines for dirt or damage
4. Check the operation of sensors that affect injection time
5. If necessary, replace faulty components

Related codes

Error P21C0 by Vehicle Brand