Malfunction Indicator Lamp and P0130

[mtajkov]

is it possible to disable MIL error lamp P0130 with Forscan extended license for Ford Focus 1.0 ecoboost (year 2015)? The ECU is not currently reporting a fault.

[tractmec]

is it possible to disable MIL error lamp P0130 with Forscan extended license for Ford Focus 1.0 ecoboost (year 2015)? The ECU is not currently reporting a fault.

Are you asking if it is possible to disable the MIL Lite for this DTC? The answer is no and the only way to turn the light off is to clear the P0130 DTC by using the DTC reset button in the DTC Icon next down from the Car Icon if using the Windows version!

If the DTC keeps reappearing then you have a problem with the Upstream O2 sensor on Bank #1 and it will need to be diagnosed and repaired!
I assume you have diagnosed the P0130 code which is registering a fault with the "O2 Sensor#1 Bank #1! If the code cleared/reset and the light turned off upon clearing/ DTC Reset, it may have been a "not present at time of request" code suffix on the end of the DTC(:8 etc), but was registered on earlier drive cycle(Assuming this is what you mean by "Not currently registering a fault"?)!

If this was the case you will likely see it come back at some future point if it does not return immediately!

The upstream or #1 O2Sensor is usually threaded in to the Exhaust manifold and the bank #1 contains Cylinder no 1 in the cylinder numbering or in the firing order. In a four cylinder there will be only Bank #1 and O2 Sansor #1 upstream sensor threaded into the Manifold at the exhaust outlet collection point and O2 Sensor #2 or Downstream sensor will be in the exhaust pipe after the Catalytic Converter!

Any Exhaust leaks from any where on the Exhaust system can trigger a P0130 DTC or faults in the wiring/connectors to the Upstream O2 sensor or it can indicate a failing upstream #1 O2 sensor!

If any Emissions controls have been removed and/or altered(Cat removal etc. although this usually results in an Downstream #2 O2 sensor fault Catalytic conversion rate under performance) then you will have to consult tuning software and/or hardware as FORScan cannot help you with that situation!

[mtajkov]

Apologies for the mistake, the correct code is P0420:00-EC — Catalyst System Efficiency Below Threshold. This error occurs infrequently, and the service department attributes it to the gasoline.

Regards...

[tractmec]

Apologies for the mistake, the correct code is P0420:00-EC — Catalyst System Efficiency Below Threshold. This error occurs infrequently, and the service department attributes it to the gasoline.

Regards...

Catalyst Efficiency codes such as P0420(and this would likely have been a #2 downstream HO2 Sensor code rather than Upstream #1) can indicate a Plugged Converter or failing Catalyst medium and that usually results from misfires which contaminate and over heat the medium with raw gasoline(and can cause Catalytic converter fires) or excessive oil consumption which plugs up the medium with oil carbon! High mileage converters will often set this code occasionally and will eventually need to be replaced!

Misfires can be caused by a number of things like failing Ignition coils or spark plugs to Leaking fuel injectors or Valve train problems! Mode 6(Car Icon) is a good way to monitor for misfires as well as there are PID's in the PCM live data(Oscilloscope icon) that can be monitored for misfires!
This monitoring will be needed in order to eliminate Engine operation problems over a failing Downstream sensor(and they do not fail very often)!

I have no idea what the Service department means by that Gasoline comment! It sounds more like they were not interested in actually diagnosing the problem but that is just an old mechanic's opinion, for what it is worth!

Catalyst Efficiency codes are usually a result not a cause and just replacing a converter without finding the cause of the code will just result in the replaced converter failing again in a short time!

I have a 2005 F150 5.4 V8 with 410,000KM on it and using some oil that is in this same predicament(Occasional P0420 Bank 1 P0430 Bank 2 both downstream HO2Sensor code)(V engines will have 2 banks while in line engines with single exhaust will as a rule will only have one bank)!

After all this. to again answer your original query, FORScan cannot disable the MIL or the code. It can only read and clear it each time it sets!

You have some Diagnostic work to get done and in future, a possible Converter replacement!