Q: Engine code p0430

asked by on

Pulled engine code p0430. I was curious to know if a bad fuel injector cleaner ( put in via gas tank ) to fuel ratio can cause this issue. Only put in half tank ( 15 gallons ) of gas. Issue popped up 5 minutes after putting injector cleaner in/ refueling. No lack of power or performance yet.

My car has 67000 miles.
My car has an automatic transmission.

It may be possible that the fuel tank fuel injection additive has caused the catalyst to not be able to clean the chemical you put in out of the exhaust stream causing the catalyst sensor to not work correctly. As with any code received you should clear the code first and then run the engine for a few days to see if the code returns. I would suggest before clearing the codes to fill up the fuel tank after you have used enough fuel to be below half of a tank. This should dilute the additive you put in enough to not interfere with the O2 sensor operation or the catalyst. It may take a few days to mix the fuel in the tank and then clear the codes and drive for another few days to see if check engine light returns. If the light comes back on then a full code pinpoint to be done to see if catalyst or O2 sensor damage has occurred. If you need assistance with this issue, a certified YourMechanic technician can help to inspect your vehicle’s engine codes.

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. Engine code p0430

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: Does a 99 GMC Sonoma have an electric fuel pump or a mechanical

Hello, The 1999 GMC Sonoma should have an electrical fuel pump. You should be able to hear the fuel pump come on when you turn the key to the "on" position during it's priming phase prior to starting the engine....

Q: My 2009 GMC Sierra is making a clunking noise in the rear end. It happens when the truck is in Drive, but while I am applying the

It is possible that you could have a loose leaf spring shackle causing this noise. If the truck does not have leaf springs on the axle does possible that it has an arm that acts as a control arm that...

Q: How much will it cost to see if it's the water pump,I put in a new radiater and there's no termistad

If you desire that engine overheating be diagnosed by a certified Mechanic, dispatched by YourMechanic right to your location, please request an engine overheating diagnostic. The cost of that diagnostic is $70 to $80 depending on your location in the...

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...
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...
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.