What Does P2012 Mean?
DTC P2012 indicates the intake manifold runner control circuit on bank 2 is reading below the expected voltage threshold. The ECM detects an abnormally low signal on the IMRC actuator control wire for bank 2, suggesting a short to ground in the wiring or an internally shorted actuator coil. This is the bank 2 equivalent of P2009.
Common Causes
30%
Short to ground in the bank 2 IMRC actuator wiring
30%
Internally shorted IMRC solenoid coil on bank 2
20%
Water intrusion or corrosion in the bank 2 IMRC connector causing low resistance path
15%
Chafed wiring insulation contacting a grounded surface
5%
ECM internal driver fault on the bank 2 IMRC output
Diagnostic Steps
1
Review freeze frame data and check for related bank 1 codes to isolate the fault to bank 2.
2
Inspect the bank 2 IMRC actuator connector and harness for moisture, corrosion, or damaged insulation.
3
Disconnect the bank 2 IMRC actuator and check if the circuit voltage returns to normal at the harness connector.
4
With the actuator disconnected, measure for short to ground between the control wire and chassis ground.
5
Measure the bank 2 IMRC solenoid coil resistance and compare to specification; a low reading indicates an internal short.
Estimated Repair Cost
$75 - $400
Parts + labor, varies by vehicle and location
DTC P2012 indicates the intake manifold runner control circuit on bank 2 is reading below the expected voltage threshold. The ECM detects an abnormally low signal on the IMRC actuator control wire for bank 2, suggesting a short to ground in the wiring or an internally shorted actuator coil. This is ...
The most common cause of P2012 (Intake Manifold Runner Control Circuit Low Bank 2) is: Short to ground in the bank 2 IMRC actuator wiring
Typical repair costs for P2012 range from $75 to $400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Low safety risk. The bank 2 IMRC system may default to a fixed runner position. Engine performance will be slightly reduced but the vehicle remains drivable.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2012 to identify the root cause.
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Quick Info
Category
Powertrain
System
Intake / Fuel Management
Difficulty
Type
Generic (SAE)
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