1999 Mazda 626 "catalyst below threshold bank 1" Questions

Question about Mazda 626

I have a 98 Mazda 626, error codes p0420 and p0505, anything that could cause both?

...light off. It does come on and off occasionally, could this mean the check engine sensor is bad? P0505 - Idle Control System Malfunction P0420 - Catalyst System Efficiency Below Threshold (Bank

Question about Mazda 626

1 Answer

How do i fix 1999 Mazda 646 check engine error

...CATALYST BELOW THRESHOLD - BANK 1 usually this is caused be poor spark wires or plugs. If the ignition system is in poor condition or recently repaired because of misfire it could indicate that the ...

Question about Mazda 626

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I have a 1996 Mazda 626, the check engine light

...Catalyst Efficiency Below Threshold (Bank 1)." I checked my relay for the cooling fan and it's not reading anything, could this be the solution? The cooling fan must run or the car must be running ...

Question about Cars & Trucks

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What does a po430 code mean on a mercury cougar

...Catalyst Efficiency Below Threshold (Bank 1) PO430: Catalyst System Efficiency Below Threshold (Bank 2) PO431: Warm-Up Catalyst Efficiency Below Threshold (Bank 2) THINGS TO ASK YOURSELF OR YOUR ...

Question about Mazda 626

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I have an Audi A3 2.0 FSI SE 2003 (First of 'new' shape). I have had 4 fault codes come up as follows: 1) P0011 - Bank 1 Camshaft A Intake Not Reached 2) P0420 - Catalyst System Bank 1 Efficeincy

...Below Threshold 3) P0430 - Catalyst System Bank 2 Efficeincy Below Threshold 4) P1035 - Sensor for NOX G295 Signal Implausible (Sporadic) Are these faults linked to one problem and what do I need to ...

Question about Mazda 626

2 Answers

Where should I find this sensor P0342?

Question about Mazda 626

1 Answer

2002 mazda mpv sputtering

...Converter, Bank 1 - Efficiency Below Threshold Possible Cause: Warm Up Catalyst Bank 1 faulty. Possible Solutions: Check Warm Up Catalyst Bank 1 - Set Readiness. Replace Warm Up Catalyst Bank

Question about Mazda 626

1 Answer

Catalyst operating below threshold 01' S80 what do I check for/ how do I fix this problem?

catalyst operating below threshold 01' S80 what do I check for/ how do I fix this problem? rough idle below 40 mph error code reading catalyst operating below threshold bank 1 and bank 2 The ...

Question about Mazda 626

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Catalyst Efficiency Below Threshold (Bank One)

Catalyst Efficiency Below Threshold (Bank One) Scan 0420 what is catalyst efficiency below threshold ( bank 1 ) mean? Might be time for a new Cat , or your O2 sensor isnt readying correctly

Question about Mazda 626

1 Answer

What do these codes mean ? po430 po420 po306 for mercury cougar 1999

...po420 po306 for mercury cougar 1999 P0430 code is(catalyst efficiency below threshold on bank 2)P0420 code is((catalyst efficiency below threshold on bank 1)P0306 code is(cylinder 6 misfire