Skip the auto shop - Our mechanics make house calls

Q: Diagnostic code read o2 sensor bad, replaced o2 sensor, cleared code but engine light came back on, is it caused by bad air filter

asked by on

I recently jump started my boyfriends 2001 Honda Civic which resulted in my engine light coming on the same night. Did a diagnostic text code p2270 came up, bad o2 sensor was replaced. Next day check engine light came on again, did another diagnostic test and same code came up,p2270. The only noticeable sign from my car is rattling noise and rough vibration of engine only stopped at a red light. The noise goes away after I drive my car for a while. Could this be a bad catalytic converter or just simply a bad air filter causing my o2 sensor to be bad again. Also I just recently replaced my PCM, coil packs and spark plugs. No other code shows up besides bad o2 sensor

My car has 170000 miles.
My car has an automatic transmission.

Hello there. Typically jump starting a vehicle doesn’t trigger an OBD-II error code. However, one of the most common misdiagnosis issues with the P-2270 is replacing the O2 sensor before diagnosing if there are any exhaust leaks. Obviously, you’ll want to check for the exhaust leaks first, repair the damaged component, and then clear the codes before scanning the vehicle again. Sometimes the electrical harness attached to the O2 sensor is damaged or dirty which will also trigger this error code. The noise and vibration may be an indicator of a loose exhaust pipe, which may be the source of the error code staying on. If you need any help, have a technician from YourMechanic come to your home or office to diagnose your Check Engine Light and make the necessary repairs.

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
  • Home
  • Questions
  • Diagnostic code read o2 sensor bad, replaced o2 sensor, cleared code but engine light came back on, is it caused by bad air filter

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: Steering veers over bumps and when turning

Hello. It is certainly important to adjust the "ride height" of the front end with the torsion bar adjusters before doing the alignment. If the front is set to the correct ride height on both sides (so as to be...

Q: Engine shuts down intermittently

This symptom sound like an issue with the mass air flow sensor sensor. The sensor is either dirty or oily. Remove the sensor and clean it with electrical cleaner. Then after it dries, put it on and retest the vehicle...

Q: Turning over but won't start

Hi there: Quite often the type of issue you're describing is caused by a fuel restriction or emissions component issue. Some of the particular parts that could be causing this include the EGR valve, O2 or air to fuel ratio...

Related articles

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.