Technical Fiat Punto1.2 16v lambda sensor problem

[stefki]

Hello all, I just recently register here after four months headache with my Fiat Punto lambda sensor problem and fuel consumption has been risen.

I hope some of experienced users can help me , I spent almost 500 euros on car services without luck and nobody can fix it.

I have model Fiat Punto 1.2 16v 2003, last four months the check engine light is on all the time. I diagnosed the erros with the following code p1135.

Recenty I have replaced two lambda sensors. I cleared the ECU errors and after two days of driving the engine light is on again.

Two days ago I had buyed two brand new lambda sensors I have them replaced again. Same error code same problem. .
I spoke with three car repair services they don't know where to find the problem.

Thank you

 

[judderbar]

Hello all, I just recently register here after four months headache with my Fiat Punto lambda sensor problem and fuel consumption has been risen.

I hope some of experienced users can help me , I spent almost 500 euros on car services without luck and nobody can fix it.

I have model Fiat Punto 1.2 16v 2003, last four months the check engine light is on all the time. I diagnosed the erros with the following code p1135.

Recenty I have replaced two lambda sensors. I cleared the ECU errors and after two days of driving the engine light is on again.

Two days ago I had buyed two brand new lambda sensors I have them replaced again. Same error code same problem. .
I spoke with three car repair services they don't know where to find the problem.

Thank you

What have the garages told you so far?



The code means sensor heater not working.



The first thing to find out is whether or not the heaters are working

 

[stefki]

Brand new lambda sensors replaced. Same error.

 

[judderbar]

Brand new lambda sensors replaced. Same error.

Yes but did they do any testing?


Has anybody tested the sensors to see if they get warm?

 

[stefki]

They are always warm . Anytime.

 

[s and b]

They are always warm . Anytime.

mm
live data needed

 

[stefki]

Car repair services are not equipped with oscilloscopes here.

 

[stefki]

I suppose is electrical current problem, If someone have pinout and schematic diagram of the leads to the ECU board I have to trace them.

 

[stefki]

Also i forget to mention that external bulb light is on all the time on dashboard. We have checked all bulbs and they are ok.