Exhaust Gas Recirculation "A" Control Circuit Low

What You Might Notice

• Rough idle and engine running
• Check engine light on
• Reduced fuel economy
• Loss of engine power
• Hard starting or no start

Most Common Causes

1. 1

   Failed EGR Solenoid

   Solenoid cannot control EGR valve opening and closing properly.

2. 2

   Fouled EGR Pintle

   Carbon buildup prevents proper seating of EGR valve.

3. 3

   Corroded Connector

   Electrical connection corrosion or pushed-out pins break circuit continuity.

4. 4

   Wiring Short

   Short to ground or battery voltage disrupts EGR control signal.

How to Diagnose It

1. 1

   Check Failed EGR Solenoid — Solenoid cannot control EGR valve opening and closing properly.

2. 2

   Check Fouled EGR Pintle — Carbon buildup prevents proper seating of EGR valve.

3. 3

   Check Corroded Connector — Electrical connection corrosion or pushed-out pins break circuit continuity.

4. 4

   Check Wiring Short — Short to ground or battery voltage disrupts EGR control signal.

How to Fix It

1. 1

   Replace EGR Solenoid

   Install new solenoid valve to restore proper EGR control.

   EGR Solenoid Valve↗
2. 2

   Clean EGR Valve

   Remove and clean carbon deposits from EGR valve and pintle.

   EGR Valve Gasket↗
3. 3

   Repair Wiring/Connector

   Fix corroded connector, replace damaged wires, or reseat pins.

   Connector Pins↗Electrical Wire↗
4. 4

   Diagnose ECU

   Test and reprogram or replace ECU if wiring tests pass.

   ECU/PCM↗