Q: Do I need to replace the lower O2 sensor or upper O2 sensor?

asked by on

Hi I guess you mentioned the lower o2 sensor is bad. is that correct. In fact I changed the upper o2 sensor couple of years ago.

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. Do I need to replace the lower O2 sensor or upper O2 sensor?

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: Replaced E38 computer on 2006 Pontiac g6. Should I try it out or does it need programming first?

The computer (ECM) will need programmed to the VIN of your vehicle before attempting to operate the vehicle. If you need further assistance with programming your computer, then seek out a professional, such as one from Your Mechanic, to help...

Q: Check Engine Sign flashing. Engine/Car shaking or vibrating when not moving.

Hi Kazi. Thanks for sending in your question today. Typically, when the check engine light or other warning light illuminates, it means the ECU or onboard computer has detected a mechanical or electrical fault from the engine, transmission or other...

Q: The car suddenly reduces speed and finally stops moving after driving for 30 minutes to an hour. The the radiator becomes very hot.

Hi there. It seems that the engine is overheating while you are driving. Check the cooling fans and see if they are working when the engine is hot. If the cooling fans are not working, then check the fan relay...

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...
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.