code analysis
#1
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Well did my first long run with my new disco and of course CEL came on I put my scanner on it and pulled these codes.
P1590- ABS rough road signal malfunction
P0135- O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P0155- O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
P0171- Multiplication injector adaptive fuelling lean limit exceeded LH bank
P1171- Oxygen Sensor System Too Lean Fault Banks A & B
P0139- Oxygen Sensor Slow Response *Codes* A D
im taking it that i need to replace my o2 sensors but i was wondering if I should just do all 4.
P1590- ABS rough road signal malfunction
P0135- O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P0155- O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
P0171- Multiplication injector adaptive fuelling lean limit exceeded LH bank
P1171- Oxygen Sensor System Too Lean Fault Banks A & B
P0139- Oxygen Sensor Slow Response *Codes* A D
im taking it that i need to replace my o2 sensors but i was wondering if I should just do all 4.
#2
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I think you are right on the money with getting new O2's. Before you go spend the money it's worth it to have a look at the 2 front O2 plugs. They can get oil inside them from a leaking valve cover and cause all sorts of problems.
If you decide to get new sensors then I would go ahead and replace all 4 sensors from bosch. If you can't afford all 4 bosch then just get the front 2 bosch right now and the rear 2 down the line, but what ever you do I would stay away from aftermarket sensors.
If you decide to get new sensors then I would go ahead and replace all 4 sensors from bosch. If you can't afford all 4 bosch then just get the front 2 bosch right now and the rear 2 down the line, but what ever you do I would stay away from aftermarket sensors.
Last edited by Jared9220; 09-26-2014 at 08:43 AM.
#4
#6
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Yes the O2 sensors will cause a rough idle, I am going/went through the same issues. Only I had 15 codes!!
If you haven't already I would recommend upgrading to Magnecor 8mm plug wires:
As instructed to me by DiscoMike. Good luck!!
![Mad](https://landroverforums.com/forum/images/smilies/MMiQGA5.png)
As instructed to me by DiscoMike. Good luck!!
#7
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Yes the O2 sensors will cause a rough idle, I am going/went through the same issues. Only I had 15 codes!!
If you haven't already I would recommend upgrading to Magnecor 8mm plug wires:
As instructed to me by DiscoMike. Good luck!!
![Mad](https://landroverforums.com/forum/images/smilies/MMiQGA5.png)
As instructed to me by DiscoMike. Good luck!!
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