OBD-II code · Powertrain (generic)
P0660 Intake Manifold Tuning Valve Control Circuit Open Bank 1
The control line of the IMT valve on bank 1 is open - the ECU cannot drive the valve. The intake manifold runner control (IMRC) flaps tune intake geometry for filling efficiency across the rpm range; stuck flaps cost part-load torque and can set lean codes.
Is it safe to drive with P0660?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen in valve or wiring
- Less likelyPin pushed back out of connector body
- Less likelyCracked solder joint inside the module or sensor
Symptoms
- Check engine light on
- Possible limp mode or no-start
- Multiple follow-up faults across modules
- Reset/relearn may be needed after repair
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.6–2 h
- Emissions test
- Likely to fail
- Parts involved
- Intake Manifold Tuning Valve B1
Related codes
- P0663Intake Manifold Tuning Valve Control Circuit Open Bank 2
- P065DReductant System Malfunction Lamp Control Circuit
- P065EIntake Manifold Tuning Valve Performance Bank 1
- P065FIntake Manifold Tuning Valve Performance Bank 2
- P0661Intake Manifold Tuning Valve Control Circuit Low Bank 1
- P0662Intake Manifold Tuning Valve Control Circuit High Bank 1
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.