CEL Code help
02-19-2007, 07:09 PM
#1
Cruisin'
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CEL Code help
Buying an 01 C4. Car has 115K miles! Great example of these engines through the test of time. Not a single RMS issue nothing major throughout life of car. Did have one issue though. CEL light is on. Ran OBD tool on it and this is what i got:
P1126- Oxygen Sensor Low Adaptation, Lower load range, Bank 1
P1128- Oxygen sensing adaptation, Idle range bank 1
P1130- Oxygen sensing adaptation, idle range, bank 2
P1133 Oxygen sensing adaptation, Lower range bank 2
P0300- Misfire detection
P0303- Misfire cylinder 3
Is the deal off? Would it be correct to assume it probably needs a new round of O2 sensors? Any thoughts on the Misfire and should I be worried? The car drives fine never any CEL flashing.
P1126- Oxygen Sensor Low Adaptation, Lower load range, Bank 1
P1128- Oxygen sensing adaptation, Idle range bank 1
P1130- Oxygen sensing adaptation, idle range, bank 2
P1133 Oxygen sensing adaptation, Lower range bank 2
P0300- Misfire detection
P0303- Misfire cylinder 3
Is the deal off? Would it be correct to assume it probably needs a new round of O2 sensors? Any thoughts on the Misfire and should I be worried? The car drives fine never any CEL flashing.
02-19-2007, 07:33 PM
#2
no you do not need o2 sensors, anyone that tells you that you do doesnt know anything about these cars.
you have p codes can i assume you have acces to a pst2 or piwis........if so i need the fr and tr adapation numbers. or the fuel trim if you have generic obd 2
those faults indicate that the engine magement software is at its maximmine adjustment to correct for a problem. you have reached your lean or rich threshold. if its rich its most likley the maf sensor
if its lean its a vacum leak, many times on older cars i have fixed vaum leaks only to have them go way rich afterwards and then need a new maf snesor.
get some fuel trim or adaptaion numbers and let me know what they are
you have p codes can i assume you have acces to a pst2 or piwis........if so i need the fr and tr adapation numbers. or the fuel trim if you have generic obd 2
those faults indicate that the engine magement software is at its maximmine adjustment to correct for a problem. you have reached your lean or rich threshold. if its rich its most likley the maf sensor
if its lean its a vacum leak, many times on older cars i have fixed vaum leaks only to have them go way rich afterwards and then need a new maf snesor.
get some fuel trim or adaptaion numbers and let me know what they are
02-19-2007, 08:27 PM
#3
Race Car
Most probably need to clean or replace MAF. Misfires and fuel adaptations are partially controlled based on engine load input, and this is classic indications that the MAF is causing the problem. This assumes that your plugs and coils are good, and intake is tight.
02-20-2007, 12:52 AM
#4
Originally Posted by 1999Porsche911
Most probably need to clean or replace MAF. Misfires and fuel adaptations are partially controlled based on engine load input, and this is classic indications that the MAF is causing the problem. This assumes that your plugs and coils are good, and intake is tight.
