OBD2 Code P0430 - Catalyst System Efficiency Below Threshold (Bank 2)

Tiny
KATTMANDU
  • MEMBER
  • 2013 FORD EXPLORER
  • 3.5L
  • V6
  • AWD
  • AUTOMATIC
  • 90,000 MILES
Please explain to me what might be the reason for the "Check Engine" light. Thanks!

-FREEZE FRAME DATA- (from ODB2 scanner)

Fuel System 1
Closed Loop

Calculated LOAD
34.5%

Engine Coolant Temp
188 degrees F

STFT Bank 1
-0.7%

LTFT Bank 1
-4.6%

STFT Bank 2
-1.5%

LTFT Bank 2
-3.1%

Engine RPM
1148 RPM

Vehicle Speed
16 MPH

Ignition Timing
30.0 degrees

Intake Air Temperature
71 degrees F

Mass Air Flow Sensor
002.31 lb/min

Throttle Position
18.8%
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Friday, June 3rd, 2016 AT 12:57 PM

7 Replies

Tiny
HMAC300
  • EXPERT
What is the code not freeze frame data? You have a sensor that has gone bad, lost communication etc. Send us the code for a better description.
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Friday, June 3rd, 2016 AT 1:02 PM
Tiny
KATTMANDU
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It is in the title of this post.

OBD2 CODE P0430 - CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (BANK 2)
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Friday, June 3rd, 2016 AT 1:08 PM
Tiny
KATTMANDU
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Is that my bank2 O2 sensor right below the oil dipstick?
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Friday, June 3rd, 2016 AT 1:31 PM
Tiny
HMAC300
  • EXPERT
Dummy me sorry a 430 code is a catalytic converter is bad. Or an air leak or O2 sensor is bad on right bank. If converter is bad you might try to contact Ford as they are warrantied for 80,000 miles. It might also be a fuel issue like low fuel pressure but normally that is cat converter code. This may be a vacuum leak or low fuel pressure. It also may be restricted so check for vacuum at intake if 15" or less at idle may help you diagnose a plugged exhaust. Also bang converter on right hand side with engine off if you hear looseness inside it's pretty well shot. I do not see any tsb's on this but check with Ford anyhow.
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Friday, June 3rd, 2016 AT 1:33 PM
Tiny
HMAC300
  • EXPERT
Right hand side normally, but with Ford it may be left due to the way their cylinders in engine are laid out.
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Friday, June 3rd, 2016 AT 1:34 PM
Tiny
KATTMANDU
  • MEMBER
Thanks! I could change the O2 sensor (bank 2) myself, but anything beyond that I would prefer to take it in.
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Friday, June 3rd, 2016 AT 1:36 PM
Tiny
MHPAUTOS
  • EXPERT
You can change the sensor, but they can be often seized in the exhaust and often the thread comes out as it binds up, so if you try and remove, do not force it, if you can get it to move it will either come out easily or it will fight you all the way, if the latter take it to an exhaust repairer so they can heat it up and hopefully break the seize.
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Friday, June 3rd, 2016 AT 3:24 PM

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