P3 V3 OBD2 Vent Gauge — VW MK6 Jetta / GLI / TDI
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P3 V3 OBD2 Vent Gauge — VW MK6 Jetta / GLI / TDI
Multi-function digital gauge · Built to order · 2011–2018 Jetta
Drops into the driver-side air vent and reads live telemetry straight off the ECU through the OBD2 port. No pillar pod, no drilling, no squinting at a pixelated screen. Boost, engine temps, performance timers and fault codes on one bright OEM-matched display that dims with your headlights and disappears into the dash when it's off.
Free shipping on orders over $100.
Home / MK6 Jetta / GLI / Gauges
P3 V3 OBD2 Vent Gauge — VW MK6 Jetta / GLI / TDI
Drops into the driver-side air vent and reads live telemetry off the ECU through the OBD2 port. Boost, engine temps, performance timers and fault codes on one OEM-matched display.
Free shipping on orders over $100.
Installation
Seven steps, one trim tool.
No cutting, no splicing, no permanent modification. The whole job runs off the driver-side fuse box cover and the vent above it — most people are done inside half an hour.
Overview
Real ECU data, factory looks.
The point of a vent gauge is that you stop noticing it until you need it. This one sits where the OEM vent was, matches the cluster illumination, and pulls its numbers from the same sensors the ECU is reading.
The Fit
It lives where the vent was.
The display is built into a replacement driver-side vent assembly, so there's no pod on the pillar and nothing stuck to the dash. Airflow is engineered to carry on through — heat and A/C work exactly as before.
The Data
Boost, temps, timing, codes.
Digital boost and vacuum with a perimeter bar graph, plus coolant and intake temps, AFR or Lambda, EGT, throttle angle, ignition timing and battery voltage — all read over OBD2 with a single connection.
The Look
Matches your cluster at night.
Colour-matched LED options mirror VW instrument cluster illumination, and the display dims automatically when you switch the headlights on. Bright enough to read at a glance in daylight, not blinding after dark.
The Diagnostics
Kill the check engine light yourself.
Read and clear diagnostic trouble codes directly from the gauge — no laptop, no scan tool, no trip to the shop to find out what a light means. Unplug it any time and it keeps your settings.
Features
What you're getting.
Plug-and-play OBD2 install
One connection to the diagnostic port and you're running. A hard-wire harness kit is available separately if you'd rather keep the OBD2 port free for other devices.
Digital boost readout + perimeter bar graph
Pressure shown as a number with a dynamic perimeter bar graph around the display. Reads standard boost over OBD2, or from the optional analog sensor for tuned and big-turbo setups.
Programmable multi-stage shift light
Digital RPM readout with a user-programmable multi-stage shift light built into the display border. Set it where your engine actually wants to be shifted.
Acceleration & braking timers
Built-in 0–60, 0–100 and 60–130 acceleration timers, plus 60–0 and 100–0 braking timers. Benchmark before and after a mod without a phone app.
Imperial, metric, or a mix
Every readout is individually configurable — PSI/inHg or BAR, Fahrenheit or Celsius, MPH or KPH. Vehicle speed calibrates in 1% steps from −9% to +20%.
Two universal 0–5V analog inputs
Two universal 0–5V inputs take any linear-output sensor — oil pressure, fuel pressure, ethanol content via the ESVA adapter. A fourth input handles auto-dimming.
What's in the box
Digital display pre-installed in the replacement OEM vent, custom OBD2 wire harness, and the control module. Everything needed for a standard install.
Readouts
Everything it can show you.
All of the below come over the single OBD2 connection on gas models. Every value can be configured in Imperial or Metric units independently.
Boost & vacuum
Digital pressure plus perimeter bar graph. Reads over OBD2, or from the optional 80psi analog sensor.
Coolant · intake · exhaust temperature
Coolant temp, intake air temp and exhaust gas temp, each configurable in Fahrenheit or Celsius.
Air/fuel ratio
Displayed as AFR or Lambda, your choice.
RPM · throttle angle · ignition timing
Engine RPM with the shift light, throttle angle and ignition timing.
Battery voltage
Live system voltage — catches a tired battery or alternator early.
Vehicle speed
Raw or calibrated in 1% increments from −9% to +20%, in MPH or KPH.
Performance & braking timers
0–60, 0–100 and 60–130 acceleration, plus 60–0 and 100–0 braking.
Diagnostic trouble codes
Read and clear check engine codes straight from the gauge.
Add-Ons
What's included, what's optional.
The gauge is complete out of the box for standard readings on gas models. The extras below are for tuned cars, aftermarket forced induction, and anyone wanting readings the ECU doesn't provide.
Digital display in replacement OEM vent
The display comes pre-installed in the vent assembly for your chassis — no transferring parts between housings.
Custom OBD2 wire harness & control box
Everything needed to connect the display to the diagnostic port and stow the module in the fuse box cavity.
All standard OBD2 readings
Boost, temps, AFR, throttle, timing, RPM, voltage, speed, timers and DTC access — no extra hardware needed on gas models.
80 psi analog boost sensor
Plugs straight into the P3 harness, no wiring. For tuned cars, aftermarket turbo or supercharger kits, and any setup where OBD2 boost data isn't accurate enough. Required for boost on 2011–2013 TDI.
Boost tap & tubing kit
Needed alongside the analog sensor — roughly 60in of 5/32in tubing, a T-connector, hose connectors and zip ties. VW EA888 and FSI/TSI/TFSI boost taps are sold separately.
Hard-wire harness kit
Wires in behind the OBD2 port so the port stays free, or runs the gauge from switched 12V for analog-only operation.
Ethanol content sensor + ESVA adapter
Converts a GM/Continental flex fuel sensor signal to 0–5V so the gauge can display ethanol content and fuel temp on an analog input.
Trim removal tool kit
Plastic composite tools that make popping the vent and dash cover out far less likely to leave marks.
Want any of the above bundled with your gauge? Message us before ordering and we'll quote it together.
Fitment
Will it fit your Jetta?
Covers the full MK6 run — 2011 through 2018, including the facelift. All trims: S, SE, SEL, GLI, Hybrid, TSI and TDI.
Jetta MK6 2011–2014 — 2.5L, 1.4T Hybrid, 1.8T Gen 3
Everything reads over the diagnostic port with no extra sensors. Boost readings apply to the turbo cars.
Jetta GLI MK6 2012–2014 — 2.0T & 2.0T Gen 3
The GLI is the strongest fit for this gauge — full boost, temps, timing and timers straight over OBD2.
Jetta MK6 Facelift 2015–2018 — 1.4T, 1.8T Gen 3, 2.0L
Same vent assembly and same access on the facelift cars.
Jetta GLI MK6 Facelift 2015–2018 — 2.0T Gen 3
Full support across the facelift GLI.
Jetta TDI 2014–2018 — 2.0 TDI
Boost reads over OBD2 on these model years without the analog sensor.
Jetta TDI 2011–2013 — 2.0 TDI
These cars provide limited data over the diagnostic port. The gauge fits and works, but boost readings need the optional 80psi analog boost sensor and a boost tap. Message us before ordering and we'll sort the right combination.
Not sure which engine or model year you've got? Send us your VIN and we'll confirm before you order.
Stop guessing what your engine is doing
P3 V3 Vent Gauge
MK6 Jetta / GLI
Boost, temps, timers and fault codes on one OEM-matched display · Plug-and-play OBD2 · Built to order for your chassis