p0430 and p0622

[06expedition]

What do these codes mean and how bad is it doc?

 

[Bedrck47]

P0430 - Catalyst System Efficiency Below Threshold (Bank 2)
Description: Indicates the bank 2 catalyst system efficiency is below the acceptable threshold.
Possible Causes: See the possible causes for DTC P0420.
Diagnostic Aids: See the diagnostic aids for DTC P0420.

P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
Description: Indicates the bank 1 catalyst system efficiency is below the acceptable threshold.
Possible Causes: Use of leaded fuel
Damaged heated oxygen sensor (HO2S)
Out of range engine coolant temperature (ECT) sensor
High fuel pressure
Damaged exhaust manifold
Damaged catalytic converter
Oil contamination
Cylinder misfiring
Downstream HO2S wires improperly connected
Damaged exhaust system pipe
Damaged muffler/tailpipe assembly
Retarded spark timing
Leaking fuel injector

Diagnostic Aids: Compare HO2S upstream HO2S11 and downstream HO2S12 switch rate and amplitude. Under normal closed loop fuel conditions, high efficiency catalysts have oxygen storage which makes the switching frequency of the downstream HO2S very slow and reduces the amplitude of those switches as compared to the upstream HO2S. As catalyst efficiency deteriorates, its ability to store oxygen declines and the downstream HO2S signal begins to switch more rapidly with increase amplitude, approaching the switching rate and amplitude of the upstream HO2S. Once beyond an acceptable limit the DTC is set.

P0622 - Generator Field Terminal Circuit
Description: The powertrain control module (PCM) monitors the generator load from the generator/regulator in the form of frequency. The frequency range is determined by the temperature of the voltage regulator, where 97% indicates a full load, and less than 6% indicates no load.
Possible Causes: GENLI circuit shorted to voltage or ground
GENLI circuit open
GENRC circuit shorted to voltage or ground
GENRC circuit open
ILC circuit shorted to voltage or ground
ILC circuit open
Battery-sense circuit open
Generator drive mechanism
Damaged generator/regulator assembly
Damaged PCM

Diagnostic Aids: Verify the battery voltage is 14.5 volts. Verify the generator/regulator has the correct part number.

 

[06expedition]

Thanks for the info and the amount of info. I didnt know where to go with these codes a friend said jokingly put a new battery and alternator in It and a new cat converter. Was his joking manner an actual quick fix without the time of all the tests?

 

[Bedrck47]

The last thing you would want to do is replace the cat until you solve the other problem

If you are having an electrical problem That could affect the voltage going to other sensors and give false codes.

 

[06expedition]

I see. So take care of p0622 issue first. See where that lands me. I appreciate the help by the way. This is the first time any of this has started to make any sense. Need a house i can build it... need a car im not the guy to call.

 

[Bedrck47]

Where you located in PA

 

[06expedition]

Huntingdon county.