P0075
Intake Valve Control Solenoid Circuit Bank 1
Variable valve timing
Generic OBD-II
High
What it means
P0075 means the ECM detected an electrical fault in the circuit for the bank 1 intake valve control solenoid — the oil-control valve that adjusts intake variable valve timing. When the circuit fails, the ECM can't vary intake cam timing on that bank, so it defaults to a fixed position. The engine still runs, but you typically lose some power, smoothness, and fuel economy.
High
Can I keep driving? Usually yes — the car runs, but variable valve timing on bank 1 may be disabled, costing power and smoothness. Fix it promptly to avoid drivability and economy losses.
Common symptoms
What you'll notice
- Check-engine light on
- Reduced power and sluggish acceleration
- Rough or unstable idle
- Reduced fuel economy
Common causes
Most likely first
- Faulty intake valve control (VVT oil-control) solenoid on bank 1Likely
- Open or short in the solenoid control wiringCommon
- Corroded or loose connector at the solenoidCommon
- Blown fuse or lost feed to the solenoid circuitLess often
- Faulty ECM/PCM driver (rare — check wiring and solenoid first)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and confirm the fault is current.
- Inspect the bank 1 solenoid connector and wiring for damage, corrosion, or a loose pin.
- Measure the solenoid's resistance and compare to spec.
- Confirm power and ground reach the solenoid connector when commanded.
- Replace the solenoid if it's out of spec; repair wiring otherwise. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0075?+
Short-term, usually — but bank 1 valve timing may be locked in a default position, so expect less power and a rougher idle. Have it fixed promptly to protect drivability and economy.
Can I just clear P0075?+
It clears but returns once the ECM re-tests the solenoid circuit. The wiring or solenoid fault has to be repaired for the code to stay off.
Related codes
Often seen with P0075
Read & clear P0075 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX