Ram Has Shorted Diesel Injector
This bulletin applies to 2017 RAM 2500, 3500 and 4500 vehicles equipped with a 6.7L Cummins turbo diesel engine. The MIL may be on, with DTCs set as follows:
- P0201 (fuel injector 1 circuit/open)
- P0202 (fuel injector 2 circuit/open)
- P0203 (fuel injector 3 circuit/open)
- P0204 (fuel injector 4 circuit/open)
- P0205 (fuel injector 5 circuit/open)
- P0206 (fuel injector 6 circuit/open)
Scan for additional DTCs and service as needed before proceeding. Remove the cylinder head cover. Do not remove the injector harness or terminal nuts. Inspect the area around the injector terminal posts for any metal shavings around the nuts. Remove any shavings if found.
Using a multi-meter set to the continuity setting, check all six injectors for a short to ground by placing one lead to a metal grounded contact such as the injector mounting clamp or rocker pedestal, and the other lead to each injector post. If any shorts to ground are found, remove the terminals of the injector(s) that showed a short to ground and check both terminals on the injectors for short to ground. If shorts to ground are found, replace the shorted fuel injector(s) and fuel injector supply tube(s).
Check for any metal shavings that might have been created during retorquing the injector terminal nuts after injector replacement. Remove any shavings. Re-confirm that no shorts to ground exist. Reinstall the cylinder head cover and clear DTCs.
About the Author
Information courtesy of Mitchell 1
Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.
Mike Mavrigian
Motor Age Editor
Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.