Fault Code Lookup › Powertrain codes › P0430

P0430 Powertrain · generic OBD-II

Catalyst System Efficiency Below Threshold

P0430 is a standard code covering engine, transmission, fuel and emissions. It names the system that logged the fault, not the part that failed. Below: which cars owners reported it on, what happened, and recalls on those cars, from 32 complaints filed with NHTSA. Updated November 3, 2026.

  • 32owner reports
  • 17car models
  • 0mention a crash
  • 0mention a fire
  • 2012–2024model years

Which cars get code P0430?

Every model whose owners mentioned P0430 in a complaint, most reports first. Each year opens that car's full problem report. Popular models collect more reports because more of them are on the road.

Where does P0430 show up?

By brand

  • Ford20
  • Jeep4
  • Dodge3
  • Chevrolet2
  • Chrysler1
  • GMC1
  • Volkswagen1

Component the owner filed it under

  1. Engine21 (65.6%)
  2. Fuel/Propulsion System11 (34.4%)
  3. Power Train5 (15.6%)
  4. Electrical System4 (12.5%)
  5. Engine And Engine Cooling2 (6.3%)
  6. Vehicle Speed Control2 (6.3%)

Is there a recall for P0430?

The others concern the component owners file this code under (Engine) on the same cars; they may or may not relate to the code. Recall repairs are free; check your VIN at nhtsa.gov/recalls.

Engine Ford Motor Company (Ford) is recalling certain 2015-2019 Ford F-150 and 2017-2019 Ford F-250 Super Duty, F-350 Super Duty, F-450 Super Duty, and F-550 Super Duty pick-up trucks equipped with an engine block heater and previously remedied under recall 18V894. During the previous repair, the block… NHTSA campaign 19V278000 · April 8, 2019 · Affected cars

2018 Ford F-150, 2019 Ford F-150. Full risk and remedy on each car's report.

Engine Ford Motor Company (Ford) is recalling certain 2015-2019 Ford F-150 and 2017-2019 Ford F-250 Super Duty, F-350 Super Duty, F-450 Super Duty, and F-550 Super Duty pick-up trucks equipped with an engine block heater. Water and contaminants may get into the block heater cable's splice connector causing… NHTSA campaign 18V894000 · December 18, 2018 · Affected cars

2018 Ford F-150, 2019 Ford F-150. Full risk and remedy on each car's report.

Engine Ford Motor Company (Ford) is recalling certain 2018 F-150 vehicles equipped with 3.5L engines. The cylinder heads may have been machined without lubrication supply holes for the camshaft bearing journals. NHTSA campaign 17V672000 · October 23, 2017 · Affected cars

2018 Ford F-150. Full risk and remedy on each car's report.

Engine And Engine Cooling: Engine: Gasoline: Turbo/Supercharger Accessible Technologies, Inc. (ATI) is recalling certain ProCharger Superchargers, model numbers AB037A-100, AB037A-100P, and A037A-100B, sold for installation on 2012-2017 Jeep Grand Cherokee SRT8 and SRT vehicles. The supercharger mounting bracket may contact and damage the ABS line, possibly… NHTSA campaign 17E061000 · October 19, 2017 · Affected cars

2013 Jeep Grand Cherokee. Full risk and remedy on each car's report.

What happened when owners saw P0430?

10 of the 32 reports, spread across the models above, as the owners wrote them. NHTSA removes names and VINs; long reports are trimmed. CarHooq has not verified individual claims.

Mandatory recall 24E12 reprogrammed the Powertrain Control Module (PCM) to stricter emissions monitoring standards. This caused the Check Engine light to appear within 24hrs showing code P0430. There were NO codes showing and the Check Engine light was not on before the recall was performed. Ford is denying responsibility and charging me $2,500+ out of pocket to replace the converter. I feel like they a FORCING me to purchase parts because if I don't, my vehicle wont pass emissions tests and is un-drivable (legally). Ford case#: CXH0966043220H4B3 Apparently, this has happened to THOUSANDS of F150 owners and needs to be addressed ASAP!!!!!
2018 Ford F-150Fuel/Propulsion SystemNHTSA complaint 11772031 · Oct 19, 2026
The catalytic converters for the Ford Explorer Utility Police Interceptor fail prematurely, degrading the emissions from the vehicle and causing the vehicle to fail emissions testing. Although Ford has implemented a Customer Satisfaction Campaign 22M06, they do not inform owners of the campaign or potential problem. My car was inspected by two Ford dealerships who simply cleared the error code (P0430) and made no mention of Campaign 22M06. The error code persisted as I replaced numerous other components (spark plugs, purge valve, oxygen sensors, Mass air flow sensor) trying to alleviate the problem over the last year. Only if you mention the campaign specifically will they inspect the…
2019 Ford ExplorerFuel/Propulsion SystemNHTSA complaint 11703219 · Dec 5, 2025
In June 2024, my 2019 Ford Expedition experienced serious transmission and powertrain problems. Diagnostic testing identified catalyst efficiency codes (P0430), and I was given a repair estimate that included catalytic converter replacement. The vehicle also displayed repeated “Service Engine Soon” and “Powertrain Malfunction/Reduced Power” warnings. Because the vehicle became undrivable and the repair costs were unaffordable, I was forced to release it to auction in June 2024, resulting in a significant financial loss. In April 2025, Ford issued Recall 24E13 acknowledging that PCM programming errors could falsely trigger catalyst efficiency codes (such as P0430), potentially leading to…
2019 Ford ExpeditionPower Train, Engine, Fuel/Propulsion SystemNHTSA complaint 11689464 · Sep 24, 2025
In June 2024, my 2019 Ford Expedition experienced serious transmission and powertrain problems. Diagnostic testing identified catalyst efficiency codes (P0430), and I was given a repair estimate that included catalytic converter replacement. The vehicle also displayed repeated “Service Engine Soon” and “Powertrain Malfunction/Reduced Power” warnings. Because the vehicle became undrivable and the repair costs were unaffordable, I was forced to release it to auction in June 2024, resulting in a significant financial loss. In April 2025, Ford issued Recall 24E13 acknowledging that PCM programming errors could falsely trigger catalyst efficiency codes (such as P0430), potentially leading to…
2019 Ford Expedition ELPower Train, Engine, Fuel/Propulsion SystemNHTSA complaint 11689464 · Sep 24, 2025
I HAVE A 2014 C. CAPTIVA AT 79K MILES, ONE SUNDAY ON MY WAY TO CHURCH, DRIVING ON THE HIGHWAY, I HEARD A POP AND THE CAR SHIFTED RIGHT AND SLOWED DOWN, I GET TO CHURCH AND THE SERPENTINE BELT CAME OFF, PUMP WAS LEAKING OIL ELECTRICAL SYSTEM SHUT DOWN. OVER $1200 IN REPAIR COST. A FEW MONTHS LATER P0430 ERROR CODE - CATALYTIC CONVERTER REPLACED, NEW BRAKES FRONT AND BACK. CAR HAS NOT BEEN RIGHT SINCE. PAST 4 MONTHS TRACTION CONTROL ISSUES. IF I HOLD MY FOOT ON BRAKE AT STOP SIGN, ALARM GOES OFF DASHBOARD LIGHTS UP: TRACTION CONTROL, ENGINE LIGHT AND STABILITRAK. THREE DIFFERENT MECHANICS LOOKED AT MY VEHICLE TO NO AVAIL. I TOOK IT TO MY CHEVY DEALER AND YESTERDAY WAS ADVISED MY CAR IS FINE…
2014 Chevrolet CaptivaElectrical System, Electronic Stability Control (ESC), EngineNHTSA complaint 11360374 · Sep 22, 2020
El problema de esa camioneta esque lla se le a cambiado 3 veces los catalizadores uno alos 30 mil millas y oto alos 80 mil millas y el otro alos 165 mil millas y haora tiene 168 mil millas esta com el código p0430
2015 Chevrolet SuburbanEngineNHTSA complaint 11483693 · Sep 9, 2022
MY BRAND NEW 2018 CHRYSLER PACIFICA HYBRID WHICH I GOT ON JULY 4TH 2018 SHUTS OFF LAST WEEK ON A HIGHWAY WHILE I WAS DRIVING FROM RALEIGH TO CHARLOTTE ABOUT 70 MILES/HR. WITH LOT OF DIFFICULTY WE WERE ABLE TO PULL OVER. I STOPPED THE CAR AND RESTARTED THE CAR, THE CAR BEHAVED NORMAL BUT WITH MALFUNCTION INDICATOR IN MY DASH. DEALER IS SAYING THERE WAS BUGGY SOFTWARE INSTALLED ON JULY 3RD 2018 AS A PART OF SOME U73 RECALL. OUR FAMILY IS VERY SCARED TO SIT IN THE CAR AGAIN. THEY ARE SAYING 2 PARTS DAMAGED IN CAR DUE TO THE BUGGY SOFTWARE PATCH APPLIED, PCM CODES P0420, P0430 - CATALYTIC CONVERTER EFFICIENCY FAILURE (BOTH). CHRYSLER CUSTOMER CARE SAYS NO ISSUE WITH SOFTWARE, DEALER IS SAYING…
2018 Chrysler PacificaVehicle Speed Control, EngineNHTSA complaint 11123289 · Aug 29, 2018
WHILE IN MOTION ON THE HIGHWAY, MY CHECK ENGINE LIGHT KEPT POPPING ON AND OFF. MY VEHICLE STARTED TO FEEL LIKE IT WAS LOSING POWER WHENEVER I BEGAN TO ACCELERATE. IT DOES DRIVE BUT IT MAKES A VERY LOUD, UNSETTLING NOISE WHEN DRIVING. IT SOUNDS VERY LOUD EVEN WHEN I AM SITTING IN PARK. THE VEHICLE IS NORMALLY SILENT WHEN SITTING IN PARK AND DRIVING. I AM SMELLING SOMETHING VERY UNUSUAL AS WELL WHEN DRIVING. MY CAR WAS SENT TO FRISCO CHRYSLER DODGE JEEP RAM IN FRISCO, TX A FEW DAYS AFTER THIS HAPPENED AND I WAS TOLD THAT THEY WERE RECEIVING A CODE P0430 WHICH MEANT THERE ARE ISSUES WITH MY CATALYTIC CONVERTER. I WAS TOLD THAT OVER 800,000 VEHICLES IN THE DODGE MAKE HAD BEEN RECALLED THIS YEAR…
2016 Dodge ChargerElectrical System, Unknown Or Other, Fuel/Propulsion SystemNHTSA complaint 11270820 · Oct 24, 2019
THE CHECK ENGINE LIGHT KEEPS COMING ON SHOWING CODE P0430. THIS CODE SHOWS BANK 2 CATALYTIC CONVERTER. I HAD THE CATALYTIC CONVERTER CHANGED AND SHORT TIME LATER THE CODE SHOWED UP AGAIN. I TOOK IT TO THE MAINTENANCE SHOP AND THEY INFORMED ME THAT THE ENGINE VALVE SEALS ARE LEAKING OIL INTO THE COMBUSTION CHAMBER CAUSING THE CHECK ENGINE LIGHT TO COME ON. ALSO WHEN THE CHECK ENGINE LIGHT COMES ON THE VEHICLE POURS OUT BLUE SMOKE WHICH IS OIL BURNING. MANY OTHERS HAVE HAD THE SAME PROBLEM. NO RECALLS ON THIS ISSUE.
2014 Dodge DurangoEngineNHTSA complaint 11315997 · Mar 4, 2020
I own a 2018 Dodge Journey Crossroad V6. I am submitting this complaint because I have experienced multiple serious and recurring problems with the vehicle. The vehicle has had multiple transmission repairs/replacements. I have spent a significant amount of money addressing transmission problems, yet I continue to have major mechanical issues with the vehicle. The vehicle is also experiencing catalytic-converter/emissions-system problems. The check-engine light is on and the vehicle has produced diagnostic trouble codes P0420 and P0430, indicating catalyst-system efficiency problems affecting both banks. I am concerned about the reliability and safety of continuing to operate the vehicle…
2018 Dodge JourneyBack Over PreventionNHTSA complaint 11769027 · Oct 5, 2026

P0430: questions drivers ask

What does code P0430 mean?

P0430 is a generic OBD-II powertrain code. Its standard definition is "Catalyst System Efficiency Below Threshold". The code tells you which system set the fault, not which part failed; the owner reports on this page show what it meant in practice for 17 car models.

Which cars get code P0430 most often?

In NHTSA owner complaints, P0430 is mentioned most for the Ford F-150 (11), Ford Explorer (4), Ford Expedition (2), across 17 models and model years 2012 to 2024. Popular models collect more reports because more of them are on the road.

Is there a recall for code P0430?

No NHTSA recall text names P0430 directly. 4 recalls on the cars that report this code concern the same component owners name most (Engine); they may or may not relate to the code. Check your VIN at nhtsa.gov/recalls.

What should I do if my car shows P0430?

Write down when the code appeared and what the car did (warning lights, loss of power, noises, speed, weather). Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer or independent workshop to read the stored freeze-frame data before anyone clears the code, and keep the repair order. If the car loses power in traffic, stop driving it. CarHooq does not diagnose: these are owner reports and official recall notices, not repair advice.

How this page was made

CarHooq read the text of every owner complaint filed with NHTSA for 19 US and European brands (model years 2012 onwards) and picked out the diagnostic trouble codes owners wrote down. This page lists every mention of P0430. The definition is the generic SAE J2012 wording; a carmaker may use the code slightly differently. Nothing here is a diagnosis. Data: NHTSA Office of Defects Investigation (public domain), retrieved November 3, 2026. How CarHooq reports are made.

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