Q: Check Engine light code P0430

asked by on

I am getting a Check Engine light code P0430.

Your vehicle has groups of sensors that take readings and report back to the engine computer to make adjustments, or report an error; in this case, we’re dealing with oxygen and/or air/fuel-ratio sensors.

The code P0430 indicates a failure in the system that measures the oxygen level in exhaust gases. It’s likely that your sensors have determined the catalyst to be at fault, unless there was an incorrect reading.

I would suggest having a mechanic, like the ones at YourMechanic, review the system data generated by the Check Engine light, and determine the location of the fault.

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. Q: Check Engine light 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: where is innertia switch for 2008 lexus 250 is

The fuel pump cut-off function is integral to the circuitry in the PCM on this model. There is no separate, user serviceable switch. On this model, the only reason the fuel pump power cut-off feature will be invoked is if...

Q: Hesitates with acceleration, check engine light blinks when gas is pressed. White smoke coming out exhaust but disappears

Hello...If the check engine light is flashing, that signifies a condition, such as active engine misfiring, that should be investigated and resolved promptly to avoid further damage to engine components, not to mention the catalytic converter. The recommended service is...

Q: Gears won't shift

If the gears are seizing, and the transmission will not shift, it is possible that there may be some sort of electrical or mechanical problem. I would recommend having a professional technician, such as one from YourMechanic, diagnose the vehicle's...

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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...