Q: OBD sensor not reading scanner
My OBD sensor is not reading the scanner for an emissions test. I can't find the source of the problem.
Recommended Services
| Electric Problems Inspection | $94.99 - $114.99 | Get a Quote |
This sounds like there is no power to the data bus network. This means that the OBD2 plug on your vehicle is not being powered by the battery. I would enlist the help of a qualified technician to find a wiring diagram for your OBD2 plug to trace wires and find where the loss of power is. This is an important repair to have done as the OBD2 system is a vital part of vehicle diagnosis. For example, if any warning lights were to appear on your dash such as Check Engine, Airbag, or ABS, these codes would not be able to be retrieved making it nearly impossible to diagnose. Having a mechanic inspect the electrical issue will allow them to move forward to a repair of your OBD system.
The statements expressed above are only for informational purposes and should be independently verified. Please see our
terms of service
for more details
Get an instant quote for your car
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
What others are asking
How do I use the front windshield washer?
The windshield washer helps keep your windshield clean. The washer sprays soapy water onto your windshield, and then wipes it away, to rid the windshield of any dirt or debris that had accumulated. Using the front windshield washer is easy:...
My car has a cylinder misfiring. I entend on replacing the vehicle, but for the time being, is there any danger of a break down?
Hello, If your Check Engine Light (https://www.yourmechanic.com/article/what-does-the-check-engine-warning-light-mean) has come on after experiencing performance issues and misfires, I would question the reliability of the vehicle for any drives longer than 20 minutes. A Check Engine Light by itself can sometimes be...
My clutch pedal is extremely "light" and gears won't go in.
There are a few possibilities; you either have a problem with the hydraulics, a mechanical problem with the clutch, or a transmission fluid leak. Hydraulics: When you push down the clutch pedal, the clutch master cylinder (CMC) uses hydraulic pressure...
Why wont the fan start? Smoking near fan, cooling fan new but wont start. engine overheats.
Hey there. As you alluded, this is a sign of a bad cooling fan relay switch (https://www.yourmechanic.com/services/cooling-fan-relay-replacement). The cooling fan relay switch comes on when the temperature reaches a certain level to help cool down the radiator. When this is...
Speedometer is cutting off while driving then the car begins jerking
Hi there, thanks for writing in. It sounds like the vehicle transmission speed sensor may be going bad, or the connector is damaged. Have the sensor and connector checked, and replace the sensor (https://www.yourmechanic.com/services/speed-sensor-replacement) if the connector is okay. If...
Headlights and fog lights won't come on
Hey there. You've covered the basics it seems. This problem may be more than just replacing a part. A technician with access to the wiring diagram for the circuit will be able to check for power and ground along certain...
All of a sudden my car is making loud noise when I turn it on, and accelerate
You need to find out if the muffler they put on is equal to the factory muffler or did they put the wrong one on and it is too noisey. It is this or there is an exhaust leak. Have...
My 1995 Dodge intepid 3.5L 158K miles keeps overheating. Can that problem be solved once the motor has some wear?
If your engine is overheating and replacing the water pump stops the leaks and gets coolant circulating again through the system then you should not have a problem even with a high mileage engine. If you overheated engine several times...
Where is steering angle sensor located in 2017 Toyota Camry
The steering angle sensor is at the top of the steering column. The yaw rate sensor will be mounted to the floor under front of console.
Related articles
What Are California's Emissions Standards?
California California is one of the most heavily populated states in the country. There are more vehicles on the road there than almost anywhere else in the country (statewide). Because of this, the state has had to adopt very strict...
P0668 OBD-II Trouble Code: PCM/ECM/TCM Internal Temperature Sensor Circuit Low
P0668 means there is a problematic temperature reading from the engine or transmission. This could be due to a faulty sensor or wire, or overheating.
B1926 OBD-II Trouble Code: Air Bag Passenger Pressure Switch Circuit Failure
B1926 means there is a circuit failure for the airbag switch on the passenger side, likely due to bad electrical components or a faulty switch.
Browse other content
Estimates
Cities