Powertrain
generic / SAE
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.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number6 / 60
Possible causes
- Open in valve or wiring high
- Pin pushed back out of connector body low
- Cracked solder joint inside the module or sensor low
Symptoms
- Check engine light on
- Possible limp mode or no-start
- Multiple follow-up faults across modules
- Reset/relearn may be needed after repair
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 120–500 €
- Estimated time: 0.6–2 h
- Component: intake manifold tuning valve b1
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012