P2012Intake Manifold Runner Control Circuit Low (Bank 2)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2012 means the ECM reads the control circuit of the bank 2 flap actuator too low, usually a short to ground in the wire or inside the actuator. Subaru is the one maker that names it publicly: on the 2017–2020 Impreza and 2018–2020 Crosstrek, including the plug-in hybrid, lubricant from the tumble generator valve actuator could leak and be drawn into the engine, after which the valve works erratically and P2009 or P2012 may set alongside the stuck codes. The TGV is part of the manifold, so the whole manifold is replaced with an updated one. No public table gives a threshold for bank 2; GM's bank 1 equivalent P2009 uses a ground resistance under 0.5 Ω or, on H-bridge drives, more than 8 A. CARB requires circuit faults of output components to be monitored continuously. Higher than expected readings are P2013, an open circuit is P2011.
- What you may notice
- Malfunction indicator lamp on
- Erratic idle or hesitation on light throttle
- Likely causes
- LikelyIntegrated tumble valve actuator leaking lubricant (Subaru Impreza/Crosstrek)
- PossibleBank 2 control wire shorted to ground
- RareCorroded actuator connector
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €30 – €1,100
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.