P2016 code meaning
Intake Manifold Runner Position Sensor/Switch Circuit Low (Bank 1)
Powertrain system Generic code P20xx codes Check engine light
What P2016 means
P2016 says the bank 1 flap position signal sits at the bottom of its range, typically a shorted signal wire or a lost 5 V supply. Ford sets it below 0.24 V after 5 s; the 2014 Touareg 3.0 TDI (CNRB) below 0.15 V. GM's 2018 diesels read a smart swirl actuator whose feedback is a pulse train: a period frozen at 30 ms with 0 % duty in 50 of 62 samples, at least 5 s after the actuator woke and above 11 V, gives a Type B fault. On GM's 2025 SENT sensor a raw value under 1 % in 480 of 600 samples does the same. Chrysler's short runner valve feedback uses it too: a PCM reflash for 2013–2015 Ram 1500 V6/V8 trucks addresses P2016, and a 2023 Ram case traced P2008, P2016 and P2017 together to a spread supply terminal in the valve plug.
P2016 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.3 to 2.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2016
- Check engine lamp on
- Less torque at low revs or flat spot when the runner should switch
Common causes of P2016
- Most likelySignal wire chafed and grounded
- Possible5 V or actuator supply missing (spread terminal, blown fuse)
- PossiblePosition sensor or smart actuator electronics faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Imrc position sensorImrc wiring
What each part of P2016 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 0 | Area: fuel and air metering and auxiliary emission controls. |
| 16 | The exact fault in that area. |
What to do next
- Note P2016 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2016
What does P2016 mean?
P2016 means "Intake Manifold Runner Position Sensor/Switch Circuit Low (Bank 1)". P2016 says the bank 1 flap position signal sits at the bottom of its range, typically a shorted signal wire or a lost 5 V supply. It is a generic code, so it means the same on every make.
Is it safe to drive with P2016?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P2016 fail an emissions test?
Yes, it can. P2016 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2016 to fix?
Difficulty: medium. A typical repair takes 0.3 to 2.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P2016 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.