EGR Throttle Control Circuit Open
The P213A code indicates an open circuit in the exhaust gas recirculation (EGR) throttle control circuit. This means the engine control module (ECM) has detected a break or high resistance in the wiring or connector between the ECM and the EGR throttle actuator. The EGR throttle regulates exhaust flow into the intake, and an open circuit prevents proper operation, potentially causing drivability issues and increased emissions.
1. Most Common Causes
- Open or broken wire in the EGR throttle control circuit
- Corroded or damaged connector at the EGR throttle actuator
- Failed EGR throttle actuator (motor or position sensor)
- Faulty engine control module (ECM) - rare
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or limp mode
- Rough idle or stalling
- Poor acceleration or hesitation
- Increased exhaust emissions
3. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect the EGR throttle actuator connector and wiring for damage, corrosion, or breaks.
Step 3: Use a multimeter to check for continuity and proper voltage (typically 5V reference, ground, and control signal) at the actuator connector.
Step 4: If wiring is intact, test the actuator by applying battery voltage and ground to the motor terminals to see if it moves; also check resistance of the position sensor.
Step 5: If actuator tests bad, replace it; if wiring is faulty, repair or replace the harness.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. The vehicle may enter limp mode, reducing power and potentially causing unsafe driving conditions. Additionally, emissions will increase.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, including parts (EGR throttle actuator $100-$250) and labor (1-2 hours at $100-$150 per hour).
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.