P1177 FMFR correction at its maximum negative value Y C

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chrispiec

Active Member

Posts

183

• Jan 18, 2010

• #1

Hi Guys,

i've got the fault codes

P1177 - FMFR correction at its maximum negative value Y C
&
P1179 - AMFR correction at its maximum negative value Y C

can anyone tell me what this means and how to fix it? Like where the problem is etc?

Cheers

 

OXO

Well-Known Member

Posts

1,729

Location

Rhone Alpes

• Jan 18, 2010

• #2

We had this last week.

http://www.landyzone.co.uk/lz/f10/range-rover-p1177-p1179-fault-codes-94680.html

 

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chrispiec

Active Member

Posts

183

• Jan 18, 2010

• #3

Yeh that was me last week too but was hopin someone had come across it before and could tell how to go about fixing it?

 

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chrispiec

Active Member

Posts

183

• Jan 19, 2010

• #4

Just been to the RR garage and without even checking anything the mechanic said it'll be my oxygen sensors that are away! Can he really be that good? Not even look at car and know the problem just by me giving him the fault codes?

 

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eightinavee

Well-Known Member

Posts

3,956

Location

UK.

• Jan 19, 2010

• #5

chrispiec said:

Just been to the RR garage and without even checking anything the mechanic said it'll be my oxygen sensors that are away! Can he really be that good? Not even look at car and know the problem just by me giving him the fault codes?

Click to expand...

So is he willing to pay for them if it doesnt fix it ? Has the LPG system been sorted out yet - if the LPG runs too rich OR too lean the oxygen sensors wont be able to switch,esp if the long term trims are way out.

 

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chrispiec

Active Member

Posts

183

• Jan 19, 2010

• #6

I doubt he'd be up for that. Well the lpg guy said i need to get the petrol sides of thing sorted first before he can do much. It'll throw all his calibrations out if the petrol side is changed after he does his stuff. Cars going into the RR garage on thursday so here's hoping it goes well.