P0342 error code

Daniel · Post by **Daniel** » Mon Jan 28, 2008 8:04 pm

-Check for poor mating connectors. Sensor side as well ECU side.

-CEL will go off after 4 consecutive error free starting sequence. Or by disconnecting the battery for 10 seconds.

-Check if you have +12V on the pink (?) wire, relative to ground ( black, center?), ignition ON. Use a light bulb or a voltmeter to test it.

-Last contact of connector is signal. Use a O'scope to check it, relative to ground.

-Cross-check with Kalos http://chevy.mrmax.dp.ua/EN/GMDE_TIS_START.html , not exactly the same as your's but that's all I can give you.

kopisti · Post by **kopisti** » Thu Jan 31, 2008 5:01 pm

Could you confirm the ecu is in the engine bay on a Lanos (2001)

Pir0 · Post by **Pir0** » Thu Jan 31, 2008 7:21 pm

Not sure on a lanos, but as they're kinda based around an Astra/Kadett, try the Footwell on either the drivers side or passenger side. there're 'kick; panels that can be taken off and it may or may not be there. On my Nexia, which is absed on the astra/kadett, it's at the right hand side of the driver footwell.. [But I drive on the right hand side of the road here, meaning Driver side for me, is on the Right]

daewoomofo · Post by **daewoomofo** » Thu Jan 31, 2008 10:11 pm

here in th states its under the passanger seat (your drivers) but i dont know about your side of the pond

Pir0 · Post by **Pir0** » Thu Jan 31, 2008 10:36 pm

Is that the Ecu? Was looking at a wiring diagram for the Lanos', it said it was a Pcm, i read up and thought it was some sort of mini computer for the cosmetics inside the car.

kopisti · Post by **kopisti** » Sun Feb 17, 2008 6:15 pm

I've checked the voltage on my oxygen sensor and it was pretty high 0.8V at a warm engine.
The only code I still have is P0342. Can this cause so bad fuel/air ratio to give such a value?
Maybe because of the pcm get a low signal from the camshaft sensor this cause a problem with the timing/injection.

kopisti · Post by **kopisti** » Thu Jul 31, 2008 10:03 am

After a long fault-finding eventually I sorted this problem. The solution was - which remained my last logical idea - put the sensor closer to the turning camshaft. I changed the sensor earlier but it didn't resolve the problem. I think in both sensors the permanent magnet was weak, because it was working but the distance between the sensor and a trigger metal part had to decrease to made it work. I made a hole in the hole to put the sensor closer to the camshaft.
Resetting the error code CEL doesn't come back, engine running more smoothly now.

I'm curious to see if there will be any effect on fuel consumption as well.
I attached a picture how the signal looks now:

wessock · Post by **wessock** » Sat Jan 24, 2009 12:29 am

Hi Kopisti. I'm having a similar issue. Can you describe a little better what you did to fix the problem? Have pictures by any chance, or maybe a drawing? Thanks a lot