Built-In CEL Diagnostic Functions

• Read check-engine-light (DTC) codes

• Clear codes directly from the gauge

• No handheld scanner required

High-Visibility OLED Display

• Sharp, high-contrast readout

• Day/night brightness modes

• Full black housing with clean OEM-plus look

AEM’s X-Series OBDII gauge (PN 30-0311) puts multiple channels of data at your fingertips by reading the CAN bus stream of your vehicle’s OBD port and transmitting those channels to the gauge display. It reads Diagnostic Trouble Codes (DTCs) and gives you the ability to clear codes.

Programmable Alarms

Set warnings for:

• High coolant temps

• High intake temps

• Lean fuel trims

• High boost (if ECU outputs MAP)

• Misfire indicators

• And more depending on data stream

Wiring is as simple as connecting the gauge to your vehicle’s OBDII port using the supplied connector! Because the X-Series OBDII gauge reads OBDII parameters transmitted through a vehicle’s CAN datastream, it will only work on 2008+ model year vehicles. EASY TO USE
Use the ‘Page’ button on the gauge face to scroll through available channels of data transmitted through the OBD port.

52mm Universal Fit

Works with:

• Gauge pods

• A-pillar mounts

• Vent pods

• Steering column mounts
  Anywhere a standard 2-1/16” gauge fits.

Possible channels are listed below and may include IAT, EGT, RPM, Ethanol %, MAF, Fuel Pressure, Manifold Pressure, Boost Pressure, TPS, Vehicle Speed, Lambda and more (channel availability is ultimately dependent upon what channels are programmed to transmit by the vehicle manufacturer).

Why Enthusiasts Love It

• Replaces multiple analog gauges with a single digital display

• Instantly shows what the ECU is seeing

• Perfect for lightly-modded cars without standalone ECUs

• Incredible budget alternative to expensive displays

• Ideal pre-tuning or troubleshooting tool

Whether you’re diagnosing issues, monitoring performance, or simply keeping an eye on engine health—this gauge is a powerhouse.

X-SERIES DIGITAL OBDII GAUGE FEATURES: Reads data channels from 2008+ MY vehicles through the OBDII port! Reads and clears Diagnostic Trouble Codes (DTCs)! Easy to install and wire –power and data come from OBDII port using supplied connector Slim 0.825” overall gauge depth and 0.200” cup depth – mount them virtually anywhere! 2-1/16th (52mm) gauge diameter for easy mounting in gauge pods

Installation Notes

• Simply plug into the OBD2 port

• No additional wiring required

• Works on 1996+ OBDII-equipped vehicles

• Parameter availability varies by manufacturer/ECU

• No ECU tuning, coding, or calibration required

Average install time: 1–2 minutes.

Positive locking connector provides secure connection Auto dimming sensor delivers ideal display brightness 24 green outer LEDs for quick reference to engine parameter Black bezel and black faceplate included (silver bezel/white faceplate sold separately, PN 30-0311-ACC) Compatible with vehicle/system voltages up to 16V