fault codes

[Juke driver]

Hi
I have a Nissan Juke 2011 1.5DCI, its come up with two fault codes PO545 and po1525, the PO545 code tells me I have a fault with the cars exhaust gas temperature sensor, I've just replaced the sensor which I bought from Nissan main dealers £158 plus V A T, this hasn't cured the problem as the red engine management light is still on with the same fault codes.
Can anyone please,please,please help ????

[GreenV8S]

If the sensor itself is OK, the problem may be in the wiring to/from it. Since the sensor is essentially just a resistor, it should be simple to confirm you have a voltage on one wire (probably 5V) and the other wire is grounded.

I don't know what PO1525 is. P1525 would make sense for a manufacturer-specific code and Google suggests it could be an EGO sensor fault. If you have an EGO sensor near the EGT sensor and they share the same loom, that might be a sign the loom has been damaged somewhere.

[Juke driver]

the other code comes up as a rail pressure sensor

[Elliot2000]

How about take it to a mechanic rather than wasting hundreds on things that won’t fix it.

Just because it has logged a fault for a temp sensor, it doesn’t necessarily mean it’s faulty - it might Be a consequential fault from another issue, for example - low rail pressure fault is probably not a sensor fault - it’s probably injector, fuel pump, fuel filter issue, etc

[mighty kitten]

If you can access the data see how long it’s been since it’s managed a successful regen .

[MatrixXXx]

did you reset the fault?