IMT Valve Position Sensor Circuit Range/Performance Bank 2
Code P207B indicates that the Engine Control Module (ECM) has detected a signal from the Intake Manifold Tuning (IMT) valve position sensor on Bank 2 that is outside the expected range or performance parameters. The IMT valve adjusts intake runner length to optimize torque and power. A faulty sensor, wiring issues, or a stuck valve can trigger this code, leading to reduced engine performance and fuel economy.
1. Most Common Causes
- Faulty IMT valve position sensor
- Damaged or corroded wiring/connectors
- Stuck or binding IMT valve
- Carbon buildup on valve mechanism
2. Symptoms You Will Notice
- Check Engine Light on
- Reduced engine power and acceleration
- Poor fuel economy
- Rough idle or hesitation
3. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect IMT valve and sensor wiring for damage.
Step 3: Test sensor voltage and resistance with a multimeter.
Step 4: Manually actuate IMT valve to check for binding.
Step 5: Replace sensor or repair wiring as needed.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
You can drive short distances, but reduced performance and fuel economy may occur. Prolonged driving could cause further issues.
How much does it cost to fix?▼
Typically $50-$150 for sensor replacement, plus labor if needed. Wiring repairs may cost more.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.