Modern Vespa

Anyone come across this code p1170 error code

P1170 refers to a fuel/air mixture problem, and is usually reported by the O2 sensor.

If your engine is not actually running lean, check the O2 sensor.

I've change lamda sensor three times now still comes up same error doing my head in

Do you get a different error code when the Lamba is disconnected?

What are you using to read the fault codes?

Any other symptoms (EML on, running rough, etc.)?

I've got obd2 reader I bought it comes up lamda sensor error I found I broken wire in wiring loom so I soldered it thinking I've crack it took bike for 100 miles run but engine light kept coming on and off but bike back fired a few times and won't tick over . I'm thinking about tracing wires back from lamda sensor again into loom thanks for your help

I've cut all loom back to throttle body and checked wiring with meter I cannot find anything wrong with rest of wiring so now I'm stuck why it comes up lamda sensor. I was thinking maybe it's throttle body at fault

I wonder????

Since you have the wire repaired you need to tell the Piaggio computer to re-set. Remove power from battery possibly?

Not sure if same, but I changed my O2 sensor on my Chevy Truck once and it still called out the O2 sensor. I had to go to a auto parts store and have them reset the car's computer.

Keith,
Marietta, GA

Most of the OBD compliant cars I have worked on need to have the 'Stored' and 'Pending' codes deleted after fixing something or replacing a faulty part, and this is usually done by a command from the OBD2 reader.

On some non-obd2 systems (like those that use a sequence of long and short flashes of the EML to reveal a code) you sometimes need to briefly short a special link, as disconnecting the battery doesn't clear the fault.

if it was me I would remove the throttle body and give it a real good cleaning. if nothing else it always looks better when cleaned.

I've cleaned throttle body with carb cleaner re taped up all wiring obd2 coder reader should switch off fault as it says delete fault but still comes back same fault just doing my head in lol took last year with same fault to paiggio dealer all he did was reset code and reprogram Ecu at a cost of 250 pound so wasn't happy thanks for your help

The code is a start. It does refer to Air/Fuel, so troubleshoot the entire system from start to finish. How is your fuel filter? I think we can say that your lambda sensor is probably fine since you replaced it three times. Air Filter? I agree with the throttle body cleaning as it is simple and cheap to do. Fuel Pump?

That is the problem with these codes, but remember they are generic and usually intended to put you in the area for troubleshooting.

I'll check fuel filter later today I'll let you know

agree air fuel mix issue as the sensor is end result and can only compensate so much. either air getting into system through split rubber. or maybe butterfly valve may be 100 percent shut or open to much.also make sure the air buy pass holes are utterly clean.
with regard butter fly valve, I devised an easy way to check how much its open or closed without special tools.
remove from engine then hold it upright and poor some light oil like 3 in 1 onto the butterfly valve.if the oil does not drip through to other side,then its completely shut. if oil does come though. what I did was count the drops it makes in a minute. I think a good number should be about 16-18 drops per minute.very scientific

That is because code are not telling what part is bad, it is ref a test procedure in the shop manual.
Down load the shop manual do the testing.

Problem with codes? Not if you understand them, which most people don't. They don't ref to parts, the title referance what system is affected and the number refers to a test procedure in the shop manual. Manual should give a step by step test procedure.
Most tests start with Test Battery and charging system.