Skip the auto shop - Our mechanics make house calls

Q: Keep blowing IOD Fuse

asked by on

I keep blowing my IOD Fuse, i cant seem to find a wire shorting it and blowing it or anything.
My car has an automatic transmission.

A: You will need to obtain a factory wiring di...

You will need to obtain a factory wiring diagram for your vehicle, and unplug each sensor or component power by the IOD fuse, one at a time, to see which one removes the short to ground. Rather than blowing fuses repeatedly, you can use an ohmmeter hooked up to the other side of the fuse and ground, and this will likely display a low resistance signaling a short to ground. As you remove components, watch to see when the resistance gets higher, indicating the circuit is no longer shorted. Whichever component fixes the short is likely either failed or has faulty wiring. If after this you still can’t find the cause of the blown fuses, then I would suggest having a professional, such as one from YourMechanic, diagnose your electrical issue for you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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

Get a quote

What others are asking

Q: My car won't shift and it's idling high.

Hi There, This may be a result of low transmission fluid or a failing speed sensor. The transmission speed sensor is a magnetic sensor that provides information related to the speed of the input and output shafts in the transmission,...

Q: 2007 jeep liberty cracked radiator replace or use a fix kit?

Hi There, Unfortunately, there is no way to tell whether or not the fix kit will hold it and for how long. Depending on the severity of the crack and the location of the crack it may last for a...

Q: Fuel pressure

Hello, You may want to try checking the fuel pump relay. The relay wires should have ground on two wires, power on one wire and switched power on another wire. To activate the fuel pump your ECU actually connects one...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.