My ScanGauge will shutdown while driving in my Dodge/Chrysler/Jeep

Some Dodge/Chrysler/Jeeps are sensitive about how fast/slow information is requested from the ECU.  If it’s too fast/slow the ECU will sometimes stop responding to the ScanGauge’s requests for information, so the ScanGauge thinks the vehicle is no longer running and turns off to save power.

Setting the update rate on the ScanGauge to Fast or Slow can sometimes solve this issue and allow the ScanGauge to operate normally.

Some gauges are blank

Some sensors are not used in the vehicle or data is not reported by ECU

About 10% of vehicles show FPR and 50% show MAP. 1995-1999 Subarus don’t show intake air temperature. Some Ford diesels don’t show coolant temperature. Click here for a compressive compatibility information.

Trip Fuel use is very inaccurate after using fill-up adjustment

Possible error in adjustment procedure – recalibrate your ScanGauge. See Calibrating Your ScanGauge in the user manual

When I scan the vehicle, it displays NOT READY

The vehicle has not completed its readiness Tests since the last time it was cleared or the battery was disconnected.

It will continue to say “NOT READY” until all on board diagnostic tests have been completed. This does not mean that it is not ready to be scanned. To get to this screen the vehicle computer reported that no Trouble Codes exist.

Some states require that some or all on-board tests be completed and no Trouble Codes be present to pass emissions testing. When the ScanGauge reports No Codes Found and READY, the vehicle is ready to pass emissions. Some states allow some tests to not be completed and can pass the vehicle even when the ScanGauge reports NOT READY.

Unable to clear trouble codes

Sometimes multiple attempts are needed to clear the codes. You may also try clearing the codes with the vehicle not running, and the key in the ON/RUN position.

Some vehicles don’t respond properly to the Clear Codes command and the codes cannot be cleared by the ScanGauge.

Poor MPG and Trip Fuel use accuracy

Be sure to follow the proper FILLUP procedure to maintain accuracy and to adjust sensor errors.

ScanGauge Connects and then goes to sleep after 10 to 15 seconds

First – verify that the key is in the “Run” position and/or the engine is running.

If the problem persists, your vehicle’s ECU may require the PIDs method be set to SUPPORTED in the Advanced setup parameters. This is common on 1995-1999 Subaru vehicles.

ScanGauge Never stops saying “Connecting…”

First – be sure the jey is in the RUN position, and/or start engine.

If that does not solve the problem, then the ECU may not responding properly. You may need to manually set, or “Force”, the operating MODE of your ScanGauge. Please refer to the user manual for your ScanGauge for information on how to access to the MODE setting screen. Once you are ready to set the mode, you can try the following settings:

• FORD Products: PWM or CANSF
• GM Products: VPW , ISO or CANSF
• Chrysler Products: ISO, VPW or CANSF
• Volvo Products: ISO, CANSF or CANLF
• Others: ISO, KWPS, KWPF, CANSF, CANLF, CANSS or CANLS

Next – confirm your vehicle meets the minimum OBDII, OBD2 or EOBD compatibility requirements. Click the folowing link if your vehicle is 1995 or older, or click this link if your vehicle 1996 or newer.

Nothing displayed and no backlight

You vehicle may have a blown fuse. Chaeck and replace any blown vehicle fuses. The OBDII connector is usually powered off the cigarette lighter/accessory fuse. Check this one first.

Shuts off when engine automatically turns off in a hybrid vehicle

Set the fuel type parameter to HYBRID in the Basic Setup Paramteres, ScanGauge will automaticly set the Sleep Event parameter to NO COM.