check codes

woodae · Post by **woodae** » Tue Jan 22, 2008 7:16 pm

today i checked the codes on my car and this is what came up. It was alot of codes
p0443
p0122
p0420
p0113
p1627
i couldn't believe it
p0122 throttle/pedal position sensor/switch A circuit low input
p0420 catayst system efficiency below threshold
p0113 intake air temperature curcuit high output
p1627 A/D performance
what are each of these
maybe this is why my car is hard on gas

exist3nce · Post by **exist3nce** » Wed Jan 23, 2008 1:10 am

holy crap! I'm suprised the car is still driveable.

P0443 Evaporative Emission Control System Purge Control Valve Circuit Malfunction
(emissions-related, see this thread: http://www.daewootech.com/forum/viewtopic.php?t=9788)

P0122 Throttle Position Sensor/Switch A Circuit Low Input
(something is wrong either with the throttle sensor itself or the wiring along the way, may have to replace the sensor)

P0420 Catalyst System Efficiency Below Threshold (Bank 1)
(your cat is likely dead or semi-clogged, may need to be replaced)

P0113 Intake Air Temperature Circuit High Input
(something is wrong with the IAT sensor or wiring, may have to replace the sensor..... they're usually pretty cheap)

P1627 Module Supply Voltage Out Of Range
(I have no idea what this means, never see it before!)

If you are seeing bad fuel ecnomy, it is VERY likely due to the IAT sensor and TPS. Depending on if your cat is clogged, that could make things worse as well.

Daniel · Post by **Daniel** » Wed Jan 23, 2008 6:33 pm

Don't know if this can help you. Found in Leganza service manual.

woodae · Post by **woodae** » Wed Jan 23, 2008 9:14 pm

well i just wanted to check stuff and my ait sensor was unpluged and the bank one oxygen sensor wasn't pluged in all the way and the connection on the tps sensor was messed up. i don't understand why that would throw so many codes, one of my cats is punched out would that hurt the gas milage and if i had to replace them which ones should i use the stock ones are so expensive

exist3nce · Post by **exist3nce** » Thu Jan 24, 2008 3:57 am

If your cat is punched out, that is definitely the reason why you are seeing code 420. Having no cat by itself would actually increase fuel economy and power by making the exhaust less restrictive. That is unless the ECU is going into some sort of limp mode because of it and either pulling out timing or adding more fuel. You can try fixing everything else first and then see how your fuel econ is. If its still bad, replace the cat. Which cat is punched out, the precat or the main one?

woodae · Post by **woodae** » Thu Jan 24, 2008 1:17 pm

the first one is punched out, why is there two???

woodae · Post by **woodae** » Thu Jan 24, 2008 5:09 pm

i am going to change the bank 1 oxygen sensor what size is the nut for it i have to buy the special socket

exist3nce · Post by **exist3nce** » Thu Jan 24, 2008 8:12 pm

woodae wrote:the first one is punched out, why is there two???

Most cars have 2 or more cats nowadays.