P213C - EGR Throttle Control Circuit Low Voltage
The P213C code indicates that the Engine Control Module (ECM) has detected a low voltage condition in the exhaust gas recirculation (EGR) throttle control circuit. This circuit controls the throttle plate in the EGR system, which regulates the flow of exhaust gases back into the intake. A low voltage reading suggests a short to ground, open circuit, or faulty component, potentially causing improper EGR operation and affecting engine performance and emissions.
01. Most Common Causes
- Faulty EGR throttle actuator
- Short to ground in the control circuit wiring
- Open circuit or poor connection in the harness
- Failed ECM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or hesitation
- Rough idle or stalling
- Increased emissions
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to retrieve freeze frame data and confirm the code.
Step 2: Visually inspect the EGR throttle actuator and wiring for damage, corrosion, or loose connections.
Step 3: Test the circuit voltage at the actuator connector using a multimeter; compare with manufacturer specifications.
Step 4: Check for continuity and shorts to ground in the control circuit; repair or replace wiring as needed.
Step 5: If wiring is okay, replace the EGR throttle actuator and clear the code.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as the issue can cause poor engine performance, stalling, or increased emissions. Have it diagnosed promptly.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and repair, depending on labor rates and parts needed.