The following list contains known or potential vehicle's which are not fully OBDII compliant and/or not compatible with UltraGauge v1.2 or newer. If you have a UltraGauge prior to v1.2 (roughly pre July 4 2012), please see the corresponding pre-v1.2 exceptions list

STATUS
Confirmed -	UltraGauge.com has confirmed this incompatibility
Unconfirmed -	An UltraGauge customer has reported the issue.  The issue may actually be a problem specific to their vehicle and not to all like vehicles. This should be considered a warning and you should be prepared to re-task your UltraGauge to another vehicle if you experience the same problem.  If you can also confirm the problem, we would greatly appreciate it if you could alert support via the support ticket system found here: Support Ticket
??	Simply based upon previous years this vehicle may or may not be compatible. There have been no known reports of issues.

Diesel Vehicles:  Please see this knowledgebase article: Diesel Engines

Any vehicle with a multi-displacement engine that does not have a Mass Air Flow Sensor (MAF) will not measure MPG accurately, unless Multi-displacement is disabled via Auto-Stick or equivalent..  Learn about MAF here

INTERNATIONAL VEHICLES:   It is imperative that a target vehicle is confirmed to be OBDII Compliant. Once confirmed, then this exceptions list can be consulted. Please see the compatibility page for OBDII compliance

Returns received that were purchased for a vehicle on the exceptions list or one that does not have an emission label marked as OBDII certified or compliant, will incur a $15 refurbishment fee

Year	Make	Model	Engine Size	Status	Description
1996	Subaru	all	all	Unconfirmed	older Subaru's may have few gauges
	Ford	E/F250/E/F350/E/F450	Diesel	Confirmed	Ford Diesels
1997	GM	Diesel	6.5L	Confirmed	No fuel or mileage gauges supported
	Subaru	all	all	Unconfirmed	older Subaru's may have few gauges
	Ford	Ranger	4.0L	Unconfirmed	Some 1997 Ford rangers always reports MPH=0. It appears that this it is likely a defect in the one reported vehicle. Several other installations in the same date code vehicle have not had issues. See Dealer and mention Service Bulletin No. 99-26-4 and/or Operation 992604A
	Ford	E/F250/E/F350/E/F450	Diesel	Confirmed	Ford Diesels
1998	GM	Diesel	6.5L	Confirmed	No fuel or mileage gauges supported
	Ford	E/F250/E/F350/E/F450	Diesel	Confirmed	Ford Diesels
	Ford	Ranger	3.0L	Confirmed	Vehicle always reports MPH=0. See Dealer and mention Service Bulletin No. 99-26-4 and/or Operation 992604A
	Land Rover	TD5	2.5L	Confirmed	TD5 2.5L engine Not OBDII compliant
	Dodge/Chrysler	Caravan/Town & Country	3.8L	Confirmed	Vehicle does not support Engine Intake temperature. This results in inaccurate fuel usage and MPG gauges.
1999	GM	Diesel	6.5L	Confirmed	No fuel or mileage gauges supported
	Ford	E/F250/E/F350/E/F450	Diesel	Confirmed	Ford Diesels
	Dodge/Chrysler	Caravan/Town & Country	3.8L	Confirmed	Vehicle does not support Engine Intake temperature. This results in inaccurate fuel usage and MPG gauges.
	Land Rover	TD5	2.5L	Confirmed	TD5 2.5L engine Not OBDII compliant
	Dodge	Ram 3500	Diesel	confirmed	Supported, but very few gauges available.
2000	Ford	E/F250/E/F350/E/F450	Diesel	Confirmed	Ford Diesels
	Dodge/Chrysler	Caravan/Town & Country	3.8L	Confirmed	Vehicle does not support Engine Intake temperature. This results in inaccurate fuel usage and MPG gauges.
	Land Rover	TD5	2.5L	Confirmed	TD5 2.5L engine Not OBDII compliant
2001	Toyota	Tacoma		Confirmed	6-Lug Tacomas with ABS click here for more information
	Ford	E/F250/E/F350/E/F450	Diesel	Confirmed	Ford Diesels
	Dodge/Chrysler	Caravan/Town & Country	3.8L	Confirmed	Vehicle does not support Engine Intake temperature. This results in inaccurate fuel usage and MPG gauges.
	Land Rover	TD5	2.5L	Confirmed	TD5 2.5L engine Not OBDII compliant
2002	Dodge/Chrysler	Caravan/Town & Country	3.8L	Confirmed	Vehicle does not support Engine Intake temperature. This results in inaccurate fuel usage and MPG gauges.
	Ford	E/F250/E/F350/E/F450	Diesel	Confirmed	Ford Diesels
	Land Rover	TD5	2.5L	Confirmed	TD5 2.5L engine Not OBDII compliant
	Toyota	Tacoma		Confirmed	6-Lug Tacomas with ABS click here for more information
2003	Dodge/Chrysler	Caravan/Town & Country	3.8L	Confirmed	Vehicle does not support Engine Intake temperature. This results in inaccurate fuel usage and MPG gauges.
	Ford	E/F250/E/F350/E/F450	Diesel	Confirmed	Ford Diesels
	Land Rover	TD5	2.5L	Confirmed	TD5 2.5L engine Not OBDII compliant
	Toyota	Tacoma		Confirmed	6-Lug Tacomas with ABS click here for more information
2004	Ford	E/F250/E/F350/E/F450	Diesel	Confirmed	Ford Diesels
	Infinity	G35		Confirmed	Vehicle is not fully OBDII compliant as dash lights may become impaired. A 9141 Isolation cable may resolve this issue.... though this is not confirmed.
	Toyota	Tacoma		Confirmed	6-Lug Tacomas with ABS click here for more information
	Land Rover	TD5	2.5L	Confirmed	TD5 2.5L engine Not OBDII compliant
2005	Ford	E/F250/E/F350/E/F450	Diesel	Confirmed	Ford Diesels
	Infinity	G35		Confirmed	Vehicle is not fully OBDII compliant as dash lights may become impaired. A 9141 Isolation cable may resolve this issue....though this is not confirmed.
	Land Rover	TD5	2.5L	Confirmed	TD5 2.5L engine Not OBDII compliant
	Toyota/Scion		1.5L	Unconfirmed	Very uncommon, may be same issue and solution as described here
2006	Ford	E/F250/E/F350/E/F450	Diesel	Confirmed	Ford Diesels
	Land Rover	TD5	2.5L	Confirmed	TD5 2.5L engine Not OBDII compliant
2007	Ford	E/F250/E/F350/E/F450	Diesel	Confirmed	Ford Diesels
	Toyota		1.8L	Unconfirmed	Very uncommon, may be same issue and solution as described here
2008	Ford	E/F250/E/F350/E/F450	Diesel	Confirmed	Ford Diesels
2009	Ford	E/F250/E/F350/E/F450	Diesel	Confirmed	Ford Diesels
2010	Chevy	Silverado	5.3L	unconfirmed	Occasional Engine Hesitation
	Ford	E/F250/E/F350/E/F450	Diesel	unconfirmed	Ford Diesels
2011	Ford	E/F250/E/F350/E/F450	Diesel	unconfirmed	Ford Diesels
2012	Ford	E/F250/E/F350/E/F450	Diesel	??	Ford Diesels
2013	Ford	E/F250/E/F350/E/F450	Diesel	??	Ford Diesels
2014	Ford	E/F250/E/F350/E/F450	Diesel	??	Ford Diesels
2015	Mercedes Benz	Sprinter	Diesel	Confirmed	Must use the UltraGauge EM Plus v1.4
2016	Mercedes Benz	Sprinter	Diesel	Confirmed	Must use the UltraGauge EM Plus v1.4
2017	Mercedes Benz	Sprinter	Diesel	Confirmed	Must use the UltraGauge EM Plus v1.4
2018	Mercedes Benz	Sprinter	Diesel	unconfirmed	Must use the UltraGauge EM Plus v1.4

 

UltraGauge™ is an automotive information center and OBDII scan tool. UltraGauge can be used to monitor various engine parameters, such as coolant temperature, Oxygen sensor voltage,intake manifold pressure, RPM, Intake manifold incoming air temperature, boost pressure, ambient air temperature, etc.  UltraGauge also provides fuel usage gauges, such as average MPG, instantaneous MPG, Distance to Empty, Fuel tank level, Time to empty, etc. UltraGauge can also act as a trouble code scanner (code reader).  UltraGauge can clear trouble codes and turn off the check engine light.

UltraGauge is commonly referred to as an auto scanner, obdii scanner, scanner tool, OBD2 scanner, code reader, trouble code reader, code, check engine light reader, diagnostic code reader, mileage gauge, MPG gauge, miles per gallon meter, MPG calculator, scan tool, scan gauge, auto diagnostic, digital gauge, car-md, obdii tool, auto gauge, etc.
Primarily, UltraGauge is an information center.
Click any of the 10 large buttons on our main ultra-gauge.com page to learn more about the UltraGauge OBD2 Scan Gauge