P0200 on Nissan: How to Diagnose & Fix
Injector Circuit/Open
1 Nissan model · 1 documented issue · $100-$800 repair
P0200 on Nissan by model: symptoms, diagnosis and fix
The Z32's six factory fuel-injector connectors (early EV1-style plugs) and the injector sub-harness sit directly atop a hot intake and are subjected to decades of underhood heat cycling. The connector plastic becomes brittle, the terminals corrode/oxidize, and the wiring insulation hardens and cracks — sometimes literally melting/discoloring at the plug. On twin-turbo cars the harness runs even hotter. The result is intermittent or dropped injector signal, most often on cylinders that live closest to the turbos/heat. This is one of the single most common driveability complaints on aging Z32s and is considered a maintenance item, not an if.
Common Symptoms
- Random misfire or stumble, often warm
- Rough idle that comes and goes
- One or more cylinders intermittently dropping out
- Power loss / hesitation under load
- Melted, discolored, or crumbling injector connector plastic
- Corroded green terminals inside the injector plug
How to Fix
Replace the six injector connector pigtails with heat-resistant plug-and-play repair kits (solder or crimp the new EV1 plugs onto the existing sub-harness leads), or replace the entire injector sub-harness. Owners frequently refresh the injectors themselves at the same time since access is already open. Clean/inspect the ECU and injector grounds while in there.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Z1 Z32 early-style injector connector and terminal kit
Z32 with early square-style injectors; verify injector and harness connector before purchase.
- Z1 Z32 5-speed EFI engine wiring harness
1990-1995 LHD factory five-speed Z32 NA or TT only; not automatic or five-speed-converted cars. Select old/new/hybrid injector and CAS connectors and note 1990-1992 AIV omission.
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Sources for this issue (3)
P0200 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0200 mean on a Nissan?
P0200 stands for "Injector Circuit/Open." Generic injector circuit fault. The PCM commands the fuel injectors on and off via internal driver transistors and monitors each circuit for proper voltage and current. P0200 sets when the PCM detects an open or out-of-range condition affecting the overall injector circuit (rather than one specific cylinder) — often pointing to a shared component such as the injector power feed, main relay, or fuse. On Nissan it is documented across 1 model: 300ZX.
What are the most common causes of P0200?
The most common causes of P0200 are: Open or shorted injector wiring harness between PCM and injectors, Blown injector fuse or failed injector/main relay (shared power feed), Corroded, loose, or backed-out injector connector, Faulty fuel injector (internal open winding), Failed PCM injector driver. The specific cause varies by vehicle.
How much does it cost to fix P0200 on a Nissan?
Published repair estimates on Nissan range from $100 to $800 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0200 on a different make?
View P0200 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.