2006 Posted November 22, 2015 Share Posted November 22, 2015 I have a P207F right now on a 2015. It was in forced idle. I followed the fault procedure and got out of the forced idle mode. Doing PPT RD. Dosing and DEF are good. I've replaced NOX11 and NOX12 so far and reset both sensors.There is no hard faults but the P207F is in continuous codes and I can't clear it even after a drive cycle. Theres no MIL or fault messages on the cluster. This SSM comes up: SSM 45187 - 2015-2016 F-Super Duty Vehicles Equipped With 6.7L Diesel - Diagnostic Trouble Codes That Cannot Clear When Using A ScanToolWhen servicing 2015-2016 F-Super Duty vehicles equipped with 6.7L diesel engine, they may exhibit a MIL On with DTCs:P218F, P123E, P123F, P22A2, P2204, P207F, P204E, P2085, P204F, P202E, P130E, P203E, and P205E, that remain present after repairing/attempting to clear fault DTCs,using a scan tool. These DTCs cannot be cleared with a scan tool. Note: After fixing the root concern for the identifiedMIL DTCs, if any of these DTCs have status flags of: -08,-18,-48,-58 and -68. You may proceed to clear any accompanying DEF Fluid System Fault messages in Instrument Panel Cluster(IPC). Use Selective Catalytic Reduction (SCR) System Procedures in PC/ED Manual Section 2, for correct drive cycles to clear DEF System Fault messages. If MIL is no longer On and DEF Fluid System Fault messages are no longer present, no further repairs are needed. I don't really know what this means and how it the code is supposed to clear. On a drive cycle, the NOX EVAL changes from NO to YES. Doesn't that mean the system is working correctly?If I can't clear it with the IDS, is it supposed to clear by itself during a successful drive cycle? I have authorization to replace the the SCR next, but somehow I think I'm missing something. Update: A new exhaust fixed it. Its been gone for a month. I don't know why the exhaust fixed it. But I do know, from what I can see through the SCR injector port, there is some dried up DEF on some of the baffles, but not a lot of it. I wanted to cut it apart, but it has to go back for warranty. When I did the prior approval, Ford actually called me and I spoke to someone who was very knowledgeable on the subject. He asked me some questions and told me to replace the exhaust, do a drive cycle. Also said the P207F continuous on 2015's will clear by itself after about 500 miles after it runs through all the monitors. Next time, when I follow the pinpoint test, when it gets to replacing the NOX sensor, I'm going to replace both sensors and the exhaust at the same time rather than wasting my time doing 1 thing at a time. Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted November 30, 2015 Share Posted November 30, 2015 I keep running into bad G400 ground connections. Some relocated and done so poorly and others like this one at the factory location. G400 supplies ground for the DEF pump, heater and the NOx module(s). No, I did not find it disconnected like this, it has been disconnected and composed for the picture. Say CHEEEEESE! Did I mention this truck is a 2013? Wrenching on rust here in New Jersey. Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted December 10, 2015 Share Posted December 10, 2015 Had another one today on a new-ish truck F450 Chassis with a dump body and G400 moved to the rear frame crossmember. This time I had NOx circuit performance/intermittent codes. P22A2:00-68 and P229F:00-64. Quote Link to comment Share on other sites More sharing options...
2006 Posted December 13, 2015 Share Posted December 13, 2015 Did the circuit tests lead you to G400, or is it something you normally check anyway? Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted December 13, 2015 Share Posted December 13, 2015 Did the circuit tests lead you to G400, or is it something you normally check anyway? It is now something I check because I have seen way too many in a short period of time and the G400 repairs have "fixed" the last three in a row. Reason enough? Two of these were Cab and Chassis trucks with the ground relocated to the rear cross member and done poorly. One, the heavily corroded one was on the factory position but rusted really bad. In NJ we have trucks coming from Dejana Truck and Jersey City Truck body companies. When they install dump bodies they move the ground to weld the dump frame to the truck frame. Combine that with the heavy road salt and brine that has been used increasingly and this is the result. I don't know what other regions of the country are finding but this looks like something I will be contending with for the foreseeable future. And I never got to pulling out my multimeter - Pinpoint test RD had you perform a visual inspection and I cant remember which other test it was but I actually saw G400 referred to in one test. RD8 : CARRY OUT A VISUAL INSPECTION Visually inspect the NOx11 module and the NOx12 module, the NOx11 sensor and the NOx12 sensor, the NOx11 module wiring and the NOx12 module wiring and the NOx11 module ground and the NOx12 module ground connections for the following: —signs of excessive heat —damaged wiring harness or connectors —incorrect harness routing —incorrect connections —incorrect ground circuit connections to the frame Visually inspect the exhaust system for the following: —exhaust leaks at flanges and gaskets —exhaust leaks at the NOx11 and NOx12 sensors Visually inspect the intake manifold gasket for signs of leaks. Inspect for radio frequency interference or electromagnetic interference Is a concern present? Quote Link to comment Share on other sites More sharing options...
Bruce Amacker Posted December 13, 2015 Share Posted December 13, 2015 Great info. Thanks! Quote Link to comment Share on other sites More sharing options...
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