Just pulled these codes off, can anyone offer any advice?

[maddocks21]

Ive got a 2001 4.4v8 and just pulled these codes off:

P0348 - camshaft sensor A circuit high
P1137- o2 sensor heater circuit signal intermittent (bank 1 sensor2)
P0140 -  o2 sensor circuit no activity detected

now i havent got a clue from the descriptions what i should be looking to change  / parts etc. Can anyone shed any advice?  Also worth noting i havent had any check engine lights on??

cheers

[maddocks21]

update.

I deleted the codes, took the car for a good run out, rescanned and no codes appeared? Car didnt skip a beat and ran really smoothly.

Could it be these are old error codes that havent been deleted?

[Raj]

Could well have been. Of course these beasts do throw up random errors quite a lot. A slight misfire at a single point in time can throw up numerous errors. As you say, once cleared it is fine then no worries.

[jaynana]

the tresholds are very low so if any of these cars are scanned incl mine there are various errors logged. i suppose they go on the basis of better to log than not to.. in case something happens as that helps to diagnose.


they get logged for the slightest thing. usually whether the error is currently present or not is a good indicator on whether to worry or not.

if no lights come i wouldn't usually worry too much