EGR Throttle Control Circuit Range/Performance
The P213B code indicates that the Engine Control Module (ECM) has detected a range or performance issue in the Exhaust Gas Recirculation (EGR) throttle control circuit. This circuit controls the throttle plate that regulates exhaust gas flow into the intake manifold. The ECM monitors the actual position of the throttle versus the commanded position; if there is a discrepancy beyond a set threshold, this code is set. Common causes include a faulty EGR throttle actuator, wiring issues, or a stuck throttle plate due to carbon buildup.
1. Most Common Causes
- Faulty EGR throttle actuator
- Carbon buildup on throttle plate
- Wiring or connector issues in the EGR throttle circuit
- Failed ECM (rare)
2. Symptoms You Will Notice
- Check Engine Light on
- Reduced engine performance or hesitation
- Rough idle or stalling
- Increased emissions
3. Step-by-Step Diagnosis
Step 1: Scan for additional codes and freeze frame data.
Step 2: Visually inspect EGR throttle actuator and wiring for damage or corrosion.
Step 3: Use a scan tool to command the EGR throttle and monitor actual position vs commanded.
Step 4: Test the actuator's resistance and voltage supply per manufacturer specs.
Step 5: Clean carbon deposits from throttle plate if necessary.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can cause reduced performance and potential stalling. Have it diagnosed promptly.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, depending on whether cleaning or replacement of the EGR throttle actuator is needed.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.