What Does P2016 Mean?
DTC P2016 indicates the intake manifold runner position sensor on bank 1 is reporting a signal voltage below the minimum threshold expected by the ECM. This low-voltage condition suggests a short to ground, a failed sensor with low output, or a wiring issue pulling the signal line low. The ECM cannot accurately determine runner flap position.
Common Causes
30%
Short to ground in the IMRC position sensor signal wire on bank 1
30%
Internally failed IMRC position sensor outputting low voltage
20%
Corroded connector pins at the position sensor creating a leakage path to ground
15%
Damaged wiring insulation allowing signal wire to contact grounded component
5%
ECM analog input circuit fault on the IMRC sensor channel
Diagnostic Steps
1
With key on engine off, measure voltage at the IMRC position sensor signal pin on bank 1; compare to expected range.
2
Disconnect the position sensor and check if the signal voltage at the harness connector rises to reference voltage, confirming a sensor or sensor-side short.
3
Inspect the sensor wiring for chafing, pinched insulation, or contact with grounded brackets.
4
Test sensor connector pins for corrosion or moisture that could cause a low-impedance path to ground.
5
If wiring is intact and the code persists with sensor disconnected, investigate the ECM input circuit.
Estimated Repair Cost
$70 - $350
Parts + labor, varies by vehicle and location
DTC P2016 indicates the intake manifold runner position sensor on bank 1 is reporting a signal voltage below the minimum threshold expected by the ECM. This low-voltage condition suggests a short to ground, a failed sensor with low output, or a wiring issue pulling the signal line low. The ECM canno...
The most common cause of P2016 (Intake Manifold Runner Position Sensor/Switch Circuit Low Bank 1) is: Short to ground in the IMRC position sensor signal wire on bank 1
Typical repair costs for P2016 range from $70 to $350, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Low safety risk. The ECM loses position feedback for bank 1 runners but the vehicle remains safe to operate with reduced performance optimization.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2016 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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