P006E - Turbo/Supercharger Boost Control Supply Voltage Low
The P006E code indicates that the Engine Control Module (ECM) has detected a low voltage condition in the boost control solenoid supply circuit. This solenoid regulates boost pressure by controlling vacuum or wastegate operation. Low voltage can result from wiring issues, a faulty solenoid, or a weak battery/alternator, leading to reduced engine performance and potential limp mode.
01. Most Common Causes
- Faulty boost control solenoid
- Open or shorted wiring in the solenoid circuit
- Poor electrical connection or corroded terminals
- Weak battery or failing alternator
- Blown fuse or relay for the boost control system
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or limp mode
- Poor acceleration and turbo lag
- Overboost or underboost conditions
- Possible abnormal turbocharger noise
03. Step-by-Step Diagnosis
Step 1: Scan for additional codes and record freeze frame data.
Step 2: Visually inspect the boost control solenoid connector and wiring for damage or corrosion.
Step 3: Test the supply voltage at the solenoid connector with a multimeter (should be battery voltage with key on).
Step 4: Check the solenoid resistance and compare to manufacturer specs.
Step 5: Verify battery voltage and alternator output; repair if low.
Step 6: Clear codes and test drive to confirm repair.
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 low boost control can cause drivability issues and potential engine damage. Limp mode may limit speed to prevent harm.
How much does it cost to fix?▼
Typical repair costs range from $50 to $150 for parts like a solenoid or wiring repair, plus diagnostic fees. Labor can add $100-$200 if professional repair is needed.