Intake Manifold Tuning Valve Position Sensor Circuit Low Bank 2
The P207C code indicates that the Engine Control Module (ECM) has detected a low voltage signal from the intake manifold tuning (IMT) valve position sensor on bank 2. This sensor monitors the position of the IMT valve, which adjusts intake runner length to optimize engine performance across RPM ranges. A low circuit condition typically points to a short to ground, open circuit, or a faulty sensor. This can lead to reduced engine power, poor fuel economy, and potential drivability issues.
01. Most Common Causes
- Faulty IMT valve position sensor on bank 2
- Short to ground in the sensor signal circuit
- Open circuit in the sensor wiring or connector
- Corroded or damaged connector terminals
- Failed ECM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or hesitation
- Poor fuel economy
- Rough idle or stalling
- Possible rattling noise from intake manifold
03. Step-by-Step Diagnosis
Step 1: Scan for additional codes and freeze frame data to confirm P207C.
Step 2: Visually inspect the IMT valve actuator and connector on bank 2 for damage, corrosion, or loose connections.
Step 3: Using a multimeter, check the sensor reference voltage (typically 5V) and ground at the connector.
Step 4: Measure the signal voltage from the sensor while manually actuating the valve; compare to manufacturer specs.
Step 5: If signal is low or erratic, disconnect the sensor and check for continuity to ground; if shorted, repair wiring.
Step 6: If wiring is okay, replace the IMT valve position sensor on bank 2.
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 reduced engine power and poor fuel economy may occur. In some cases, the vehicle may enter limp mode, limiting speed. Have it diagnosed promptly.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for parts and labor, depending on the vehicle and whether the sensor or wiring needs replacement.