So last winter I cut out my cats and completely cleaned them out since the computer was telling me they were clogged. I also changed out an ox sensor (bank 2 sensor 1) and everything was good for around 600 miles. Now I'm getting these three codes PO420/430 and 332. I have a code reader and this all the info I can seem to get out of it.
Powertrain Diagnostic Trouble Code Information
MIL DTC
P0420 Catalyst System Low Efficiency (Bank 1)
Stored Codes
P0332 Knock Sensor Circuit Low Input (Bank 2)
P0420 Catalyst System Low Efficiency (Bank 1)
P0430 Catalyst System Low Efficiency (Bank 2)
Pending Codes
P0332 Knock Sensor Circuit Low Input (Bank 2)
P0420 Catalyst System Low Efficiency (Bank 1)
P0430 Catalyst System Low Efficiency (Bank 2)
Freeze Frame Infomation
Parameter Description Results
DTC for which Freeze Frame was Stored P0420
Fuel System 1 Status Open Loop - due to driving conditions
Fuel System 2 Status Open Loop - due to driving conditions
Calculated LOAD Value 2.35 %
Engine Coolant Temp 192.20 °F
Short Term Fuel Trim - Bank 1 0.78 %
Long Term Fuel Trim - Bank 1 -3.91 %
Short Term Fuel Trim - Bank 2 0.78 %
Long Term Fuel Trim - Bank 2 -3.91 %
Intake Manifold Absolute Pressure 10.96 inHg
Engine RPM 535.50 rpm
Vehicle Speed Sensor 0.00 mph
Air Flow Rate Mass Air Flow Sensor 0.75 lb/min
Absolute Throttle Position 10.20 %
Monitor Status
Monitor Name .................................................. ...Status
MIL (Check Engine Light).......................................ON
Misfire Monitoring ............................................... Complete
Fuel System Monitoring ........................................Complete
Comprehensive Component Monitoring .....................Complete
Catalyst Monitoring ..............................................Comp lete
Heated Catalyst Monitoring ...................................Not Supported
Evaporative System Monitoring ..............................Not completed
NMHC Monitoring .................................................N ot Supported
NOxAdsorber Monitoring ........................................Not Supported
Secondary Air System Monitoring ............................Not Supported
Oxygen Sensor Monitoring .....................................Complete
Oxygen Sensor Heater Monitoring ...........................Complete
EGR System Monitoring .........................................Not Supported
Boost Pressure System Monitoring ..........................Not Supported
Exhaust Gas Sensor Monitoring ...............................Not Supported
PM Filter Monitoring ..............................................Not Supported
I'm not really sure which code I should start with and how to go about fixing this. I'm new to all of this so any help or input would be great. The 420 seems like the main one is it possible another ox sensor is gone?
Steven
Powertrain Diagnostic Trouble Code Information
MIL DTC
P0420 Catalyst System Low Efficiency (Bank 1)
Stored Codes
P0332 Knock Sensor Circuit Low Input (Bank 2)
P0420 Catalyst System Low Efficiency (Bank 1)
P0430 Catalyst System Low Efficiency (Bank 2)
Pending Codes
P0332 Knock Sensor Circuit Low Input (Bank 2)
P0420 Catalyst System Low Efficiency (Bank 1)
P0430 Catalyst System Low Efficiency (Bank 2)
Freeze Frame Infomation
Parameter Description Results
DTC for which Freeze Frame was Stored P0420
Fuel System 1 Status Open Loop - due to driving conditions
Fuel System 2 Status Open Loop - due to driving conditions
Calculated LOAD Value 2.35 %
Engine Coolant Temp 192.20 °F
Short Term Fuel Trim - Bank 1 0.78 %
Long Term Fuel Trim - Bank 1 -3.91 %
Short Term Fuel Trim - Bank 2 0.78 %
Long Term Fuel Trim - Bank 2 -3.91 %
Intake Manifold Absolute Pressure 10.96 inHg
Engine RPM 535.50 rpm
Vehicle Speed Sensor 0.00 mph
Air Flow Rate Mass Air Flow Sensor 0.75 lb/min
Absolute Throttle Position 10.20 %
Monitor Status
Monitor Name .................................................. ...Status
MIL (Check Engine Light).......................................ON
Misfire Monitoring ............................................... Complete
Fuel System Monitoring ........................................Complete
Comprehensive Component Monitoring .....................Complete
Catalyst Monitoring ..............................................Comp lete
Heated Catalyst Monitoring ...................................Not Supported
Evaporative System Monitoring ..............................Not completed
NMHC Monitoring .................................................N ot Supported
NOxAdsorber Monitoring ........................................Not Supported
Secondary Air System Monitoring ............................Not Supported
Oxygen Sensor Monitoring .....................................Complete
Oxygen Sensor Heater Monitoring ...........................Complete
EGR System Monitoring .........................................Not Supported
Boost Pressure System Monitoring ..........................Not Supported
Exhaust Gas Sensor Monitoring ...............................Not Supported
PM Filter Monitoring ..............................................Not Supported
I'm not really sure which code I should start with and how to go about fixing this. I'm new to all of this so any help or input would be great. The 420 seems like the main one is it possible another ox sensor is gone?
Steven
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