Honda P1078: Intake Manifold Tuning (IMT) Valve Stuck in Low RPM Position
Is your scanner showing Honda P1078?
No worries. We'll show you what it means and how to deal with it.
Honda P1078: Intake Manifold Tuning (IMT) Valve Stuck in Low RPM PositionOVERVIEW
What Does The Honda P1078 Code Mean?
When the PCM sends an open (short runner) command, no short runner return signal is received for at least 3 seconds. Intake air temperature 5 ºF (-15 ºC), engine speed is 3,800 rpm and battery voltage minimum of 10.5v. DTCs P0107, P0108, P0112, P0113, P0117, P0118, P0563, P1128, P1129, P2227, P2228, P2229 are not active.
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot.
What Are The Potential Causes Of The Honda P1078 Code?
- Poor connections or loose terminals at the IMT actuator and the PCM
- “Open” or “Short” circuit between the PCM and the IMT actuator
- Faulty IMT actuator
- PCM needs to be updated with the latest software
- Faulty PCM
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Check This Video For Reference
Advanced Diagnostics – MotoLogic, 2002 Honda CR-V