P0132 & P0138 anti pollution

Hi i have a Citroen C3 1.4 i Desire 2007 and got anti pollution warning lights checked codes and have P0132 & P0138 high voltage put 2 new 02 Oxygen Sensors new air filter cleaned injectors and fitted new orings .still got the fault codes fitted new catalytic converter but still the codes and fuel consumption is poor Help needed dont no what else to check
thanks

kirb wrote: ↑Tue Nov 13, 2018 3:15 pm Hi i have a Citroen C3 1.4 i Desire 2007 and got anti pollution warning lights checked codes and have P0132 & P0138 high voltage put 2 new 02 Oxygen Sensors new air filter cleaned injectors and fitted new orings .still got the fault codes fitted new catalytic converter but still the codes and fuel consumption is poor Help needed dont no what else to check
thanks

You have P0132 - O2 Sensor Circuit High Voltage (Bank 1 Sensor 1) , could be due to a short in the wiring to live or faulty sensor, or worst case the ECU

You also have P0138 - O2 Sensor Circuit High Voltage (Bank 1 Sensor 2) , could be due to a short in the wiring to live or faulty sensor, or worst case the ECU

It is unlikely to be both sensors going short to live at the same time, so I wouldn't change the sensors.

A new catalytic converter is quite drastic without a correct diagnosis

A common denominator could be the wiring to the sensors if they take the same physical path back the the ECU or, the other common detonator is the engine ECU itself.

I would start by finding out the path the wiring takes for the sensors and inspecting the wiring from each sensor where they are common to the ECU. Then if nothing physical is found, disconnect the ECU and the sensors and test for short circuits on the loom that concern the O2 sensors. This would prove or disprove the loom, then you would be free to diagnose the ECU if necessary.

looks like i need a new Valeo J34P ECU unit fuel consumption is realy bad any offers lol

kirb wrote: ↑Thu Nov 15, 2018 9:28 am looks like i need a new Valeo J34P ECU unit fuel consumption is realy bad any offers lol

Unfortunately just the engine ECU won't work because they are coded to the BSI and the BSI is coded to the key.

You either get a non starter with the wrong BSI/ECU combo or no remote central locking from the wrong KEY/BSI combo.

You need all 3 for it to work (and then reprogram the BSI to match your current equipment

The kits are here (on ebay), you just need to find the right combination for you

Hi theres a company in Norwich, Norfolk says if i send them my old ECU they will Data transfer from my old unit to this donor unit then this unit will plug straight in and work with your existing keys with no further programming necessary. iam still waiting for a price
i will let you know how i get on. i hope this solves my problems with the anti pollution fault
thanks

kirb wrote: ↑Sun Nov 18, 2018 1:04 pm i will let you know how i get on. i hope this solves my problems with the anti pollution fault
thanks

It will if all the other checks have been done and passed, like checking the loom and checking the signal at the sensors.

kirb wrote: ↑Sun Nov 18, 2018 1:04 pm theres a company in Norwich, Norfolk says if i send them my old ECU they will Data transfer from my old unit to this donor unit then this unit will plug straight in and work with your existing keys with no further programming necessary.

That is good to know and saves a lot of reprogramming and generally messing around.