OBD-II trouble code
P0283: Cylinder 8 Injector Circuit High
SAE J2012 APR2002: cylinder 8 injector circuit high. On the 6.0L diesel, high current is a shorted coil or a short to ground. The printed pair is one injector, not a FICM.
Quick facts
- System
- Powertrain
- Category
- Fuel Injectors
- Severity
- Medium severity
- Drivable
- Usually safe to drive short-term
- Repair cost range
- $768 – $953 (one fuel injector replacement, parts and labor, for the 6.0L high-current coil; a FICM replacement is outside this pair)
- DIY difficulty
- Shop recommended
Browse every code in P0200–P0299, or start from the full code library.
What does P0283 mean?
SAE J2012 APR2002 names P0283 Cylinder 8 Injector Circuit High. P0282 is cylinder 8 circuit low. A VAG-group list prints 16667 P0283 as injector 8-N86, short to positive. That label is not the 6.0L current test.
The 2007 Ford E-350 6.0L FICM page measures injector current rather than a voltage pulled toward ground. Shorted coils, called side shorts on that page, or a short to ground, produce high current and set the injector circuit high codes. The fault list names P0283 Cylinder 8 Injector Circuit High in that short-to-ground group. The 'ie' line, from P0262 and P0265 through P0283, is only examples. So on that diesel, a short to ground is a high code. An open coil is the low-current group, and the same list names P0282 as cylinder 8 circuit low. Do not file an open as P0283 on a 6.0L, and do not file a short to ground as P0282. The named list is cylinders 1 through 8. Cylinders 9, 11, and 12 are not on it.
The same page warns that the FICM is misdiagnosed and replaced when it did not fail. The symptoms it ties to a failed module are a no-start or a constant misfire at all engine temperatures. Anything else is not likely the module. Replacement units contain no software and must be programmed. Logic power is pid FICM LPWR. Less than eight volts means a short, an open, or a low battery. No voltage at all also checks the logic fuse and connector C1282. The five ground pins are tied together inside the module, so one ground pin is not an independent pid.
No BMW S85 page for P0283 was in the documents read. The 2010 page for P0282 is a short to ground and a 3500 rpm limit, and it is the low code. Do not move that 3500 rpm line onto P0283. The G8 chart ends at cylinder 6, so its short-to-voltage lamp test is a different engine.
Common causes
- On the 2007 E-350 6.0L, a shorted coil or a short to ground, the high current the FICM fault list files as P0283
- On the VAG-group list, a short to positive on the injector that line calls 8-N86
Symptoms
- P0283 stored
- High injector current from a shorted coil or a short to ground, on the 6.0L page
- A no-start or a misfire that is present at every engine temperature, the FICM case
- FICM LPWR reading under eight volts
- P0282 stored, which on that diesel is the open-coil result
Diagnostic steps
- 1.On a 6.0L, treat P0283 as high current: a side-shorted coil or a short to ground. Treat P0282 as low current from an open coil. Do not file an open coil as P0283. Do not reverse them.
- 2.Pull engine and transmission codes together, which that page requires even on a manual transmission.
- 3.Replace the FICM only for the no-start or the constant all-temperature misfire that page names, and program the new module. A single cylinder is the injector-current path.
- 4.Read FICM LPWR before condemning current. Under eight volts is the supply. The display steps in half volts and is heavily filtered.
- 5.Do not apply the 2010 M5 276E ground test or its 3500 rpm limit. That page is P0282.
- 6.Depressurize before an injector is opened. The printed pair is one injector. The FICM is outside it.
Repair cost
$768 – $953 (one fuel injector replacement, parts and labor, for the 6.0L high-current coil; a FICM replacement is outside this pair)
The printed pair is RepairPal's national fuel-injector replacement of 3 September 2026, $768–$953, labor $304–$446 and parts $464–$507. It matches the injector the 6.0L current test is about. A FICM was searched and is not given that pair; the Ford page limits module replacement to a no-start or a constant misfire at all temperatures, and a new module still needs programming. Diagnosis is $125–$183, separate. Other injector lines, including the 2026 Tucson at $456–$604, are outside the national figure.
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DIY vs shop
Leave this one to a qualified shop. The barrier here is high-pressure fuel components, where residual pressure remains after shutdown and escaping fuel can penetrate skin. DIY attempts often produce a more expensive problem than the original code.