Skip the auto shop - Our mechanics make house calls

Q: The car with the sensor reference, low circuit and ceased voltage doesn't start

asked by on

PO698 sensor reference; voltage ceased; circuit low. The car doesn't start. Where should I start?

A: The first thing you want to do is have a ce...

The first thing you want to do is have a certified mechanic unplug the main computer and test the wires coming out of it. Either the wiring is bad, or the computer's connectors have a little condensation and corrosion, which won't let it work properly. Follow the wire to the sensor to check the wiring and sensor itself.

Pray that it's not the main computer because that's an expensive job to fix. You'll have to install a new computer and get it reprogrammed. It's a really big job, so hopefully the problem is with the wiring or sensor itself. A certified technician will be able to take a look at your car to determine a fix for your starting problem.

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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Installing cold air intake or short ram intake on a 2003 Honda Accord

No, I wouldn't do it. Drivers that are doing that stuff, they think they have faster cars that sound better and they are nicer--don't ever do that. Those are for race cars and guess what, when they set it up...

Q: Indicator Lights Electronic Stability Control (ESC) Indicator Light stays on

This is related to the traction control system in your car. This system monitors the steering stability of the vehicle and engages when loss of traction has been detected. This system counteracts over steering and under steering by reducing power...

Q: My car battery is dying while it's parked. I replaced the battery and in just a week it died while sitting parked overnight.

Hi there. There could be a parasitic load on the battery causing it to drain overnight. To check this symptom perform the following: Remove the negative battery cable (-) Get a digital meter and put one lead on the...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...