What it means
Drive voltage at the IMRC solenoid on bank 1 is above the upper limit — short to supply or an open ground side. The solenoid is energised constantly or the driver protection trips.
At a glance
- Usually lights the check-engine light
- Affects emissions; the car can fail an emissions test
How it works
The intake manifold runner control (IMRC) solenoid on bank 1 operates runner flaps that alter airflow through that bank's intake. The control module monitors the solenoid drive circuit, and P2010 sets when the circuit voltage is higher than expected, such as from a short to supply or an interrupted ground path.
Common causes
Most likely first.
- Drive line shorted to supply
- ECU driver stage failed
- Connector pins corroded - high contact resistance
Symptoms
- Check-engine light
- Reduced engine power or sluggish acceleration
- Hesitation or uneven engine response
How to diagnose it
- Use freeze-frame data and scan-tool output controls, if available, to note when the bank 1 IMRC fault occurred and whether the solenoid was commanded on.
- Locate the bank 1 IMRC solenoid and inspect its connector, pins, harness, and ground-side wiring for corrosion, damage, or a disconnected plug.
- With the circuit safely accessible, check whether the drive wire is shorted to battery supply or whether the ground path is open.
- Measure the solenoid winding and circuit continuity using the vehicle's wiring diagram and compare results with the manufacturer's specification.
- If wiring and solenoid checks pass, diagnose the control module driver according to the manufacturer's procedure.
Common fixes
- Clean and secure corroded or loose bank 1 IMRC connector pins.
- Repair a drive wire shorted to supply or an open ground-side wire.
- Replace the bank 1 IMRC solenoid if its winding fails the specified test.
- Repair or replace the control module only after confirming its driver stage is faulty.
Can I keep driving?
You can usually drive gently if the engine runs smoothly, but avoid hard acceleration because the bank 1 runners may not respond correctly and power can be reduced. Stop if the engine begins misfiring or the warning light flashes.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.