Skip the auto shop - Our mechanics make house calls

Q: change3time sensor circuit ABank1@stillitgh goes on

asked by on

Sender circuit A bank 1 light goes on I change sensor 3times

My car has 42000 miles.
My car has an automatic transmission.

A: Hi there. What code is stored? When a vehic...

Hi there. What code is stored? When a vehicle computer stores codes, they are meant to lead in the direction of the fault; not diagnose the fault. The computer presents us with a code that can specify a specific circuit, such as in your case. The computer has a set program parameter for that specific circuit. When the circuit deviates from that parameter, the computer sets a code; it does not know what caused the deviation, only that it failed. So, codes are not intended to diagnose, but to aid in the diagnostic process by leading a technician to the circuit/system at fault. It sounds like you could have either a wiring harness, engine computer, or mechanical fault. I strongly suggest you acquire a qualified technician to perform an inspection to avoid replacing unnecessary parts. Your Mechanic has several technicians available that can assist you with a check engine light inspection.

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・Save up to 30%

Get a quote

What others are asking

Q: Loud squealing sound and burning rubber smell

As you know, when your car is started in cold weather in the mornings, the belts are also cold and much less pliable than when they are warm. As the engine speeds up at a much faster pace than the...

Q: 2006 dodge magnum, car squeals on start up and gets louder when the heat/a/c is turned on? one mechanic said idler arm? isnt this

There are several possible causes for a squealing noise in the area around the belt. The belt may be compromised and beginning to fail, the tensioner may be worn out and unable to keep proper tension on the belt and...

Q: Fuel gauge is not accurate, what can I do?

The fuel gauge system on your vehicle is comprised of two sensors in the fuel tank and the gauge on the dash. The system can be tested using a scan tool for codes pertaining to the fuel system. The most...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...