DTC P2177-00

M

MikeR

New member
I have a check engine light in my Jaguar F-Type P300.

About 3 weeks ago I cleared all codes with a newly purchased Topdon ArtDiag 600s

Now I have a check engine light with just one code, DTC P2177-00 -"P2177 fault code in automobiles indicates that the engine is running too lean at idle. This can cause symptoms such as rough idling, stalling, and poor acceleration. "

The only symptom I have noticed is occasional rough idling, other than that the car seems fine.

I have cleared the code to see if it comes back, -obviously if it does I'll take it as serious.

The reason I'm sceptical is I've been plagued with faults due to low battery - I do too many short journeys.

Is this a sensible approach or should I treat this as a serious issue that should be addressed now?

TIA

Mike.
 
Which flavour of fuel are you using as high ethanol can cause this symptom? If you’re not already, I’d suggest using some super/premium fuel and seeing if that makes a difference
 
If you do lots of short journeys the first thing you need to do is get a battery maintainer to get the battery full, and to keep it that way. Lots of us have the CTEK MXS 5.0 to do the business. Low battery charge can give rise to many random "faults".
 
I'm using E95 - I'm in the UK where E95 is 95% petrol, 5% ethanol, as the manual states "fuels containing up to 10% ethanol may be used" - is this wrong?

I have the Ctek battery maintainer and a bluetooth battery monitor system and a new battery, I put the car on charge when the battery falls to 12.6 volts at rest.
 
MikeR said:
I'm using E95 - I'm in the UK where E95 is 95% petrol, 5% ethanol, as the manual states "fuels containing up to 10% ethanol may be used" - is this wrong?
Click to expand...

I use Shell VPower which is 5% ethanol and have had no issues in the past 7 years. Didn't know it was called E95 - I thought the E number referred to the amount of ethanol, so E10 is 10% ethanol?
 
The percentage is "up to....". Apparently tests have shown that some premium E5 fuels, Esso in particular I saw mentioned, don't contain any ethanol.
 
Yeah, I hope the OP isn't confusing 95-RON with the ethanol E5 and E10 business. Unless you're putting super unleaded in you're getting E10 which, as Navigator mentions, is "up to" 10%. Tescos Momentum 99-RON in the South West was apparently 0% ethanol, like Esso's super, but I don't know if that's still the case. But again, E5 means "up to" 5% ethanol.

(I can't help on the actual error, I'm an ignoramus on this sort of thing, so worth investigating both potential causes - fuel quality and/or O2 sensor - mentioned in the thread already)
 
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