P2016 on 2004-2014 Subaru WRX STI — Intake Manifold Runner Position Sensor/Switch Circuit Low (Bank 1)
1 vehicles · 1 makes · $250-$1,400 repair
Most Reported On
P2016 is an OBD-II diagnostic trouble code meaning “Intake Manifold Runner Position Sensor/Switch Circuit Low (Bank 1).” This code indicates the engine computer detected a low-voltage signal (often a short to ground) from the intake manifold runner position sensor or switch on Bank 1. This sensor reports the position of the variable intake runner flaps. A persistently low signal tells the computer the sensor circuit is faulty and it can no longer confirm runner position, which can affect airflow optimization and emissions. It usually sets a check engine light and is generally not an immediate safety risk. This code is most commonly reported on 2004-2014 Subaru WRX STI, with repair costs ranging from $250 to $1,400.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P2016, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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FAQ
What does P2016 mean?
P2016 stands for "Intake Manifold Runner Position Sensor/Switch Circuit Low (Bank 1)." This code indicates the engine computer detected a low-voltage signal (often a short to ground) from the intake manifold runner position sensor or switch on Bank 1. This sensor reports the position of the variable intake runner flaps. A persistently low signal tells the computer the sensor circuit is faulty and it can no longer confirm runner position, which can affect airflow optimization and emissions. It usually sets a check engine light and is generally not an immediate safety risk.
What are the most common causes of P2016?
The most common causes of P2016 are: Wiring shorted to ground in the sensor circuit, Faulty intake manifold runner position sensor, Corroded or damaged sensor connector, Carbon buildup affecting runner position feedback, Failed runner actuator, PCM circuit fault (rare). The specific cause varies by vehicle.
How much does it cost to fix P2016?
Repair costs for P2016 range from $250 to $1,400, depending on the vehicle and root cause.
Which vehicles are affected by P2016?
Au7o has documented P2016 across 1 vehicle models from 1 manufacturers: Subaru.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.