Q: Oxygen sensor bank 1 sensor 1

asked by on

Oxygen sensor bank 1 sensor no access on 2003 grand marquis Cant barely fit my hand or any tools to remove and replace sensor the catalytic conver is just in the way

My car has 140000 miles.
My car has an automatic transmission.

Hi there. Getting to the O2 sensors are tricky without removing some additional components or using specialty tools. You might want to have a professional mobile mechanic come to your location and complete an O2 sensor replacement to help you. However, in many cases, what is commonly diagnosed as an O2 sensor problem is actually the electrical harness that connects the sensor to the ECU or other component. It might be best to replace the harness and sensor.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Oxygen sensor bank 1 sensor 1

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: 95 grand Marquis GS

You may have a blower motor with debris that got into it from under dash. It may be paper or other debris that are in the fan blades and will make a rattle slapping noise and can only be cleaned...

Q: Pitman arm and idler arm - 2000 Ford Expedition

The pitman and idler arms are both just as important for the steering to work correctly. Both of these components will cause the steering to wander, feel loose, and may cause a pull to one side or the other. Once...

Q: Car overheats and radiator fan will not come on

Hey there. This can be caused by a number of things such as low coolant levels, a faulty thermostat, or a failing coolant fan switch. As you may know, the coolant fan switch helps to maintain the proper coolant temperature...

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.