Leaderboard

Paint chip is no good, but doubtful that it made it thru the filter, so it's likely been there, or got knocked off when you were working on removing things. Code 201 indicates that it is getting a weak or unexpected signal from the injector. The fuel metering is done by pulsing the injector open. The ECU expects it to be X resistance and it gets Y resistance instead and throws a code. This could be a failing injector (the internal solenoid may be failing) a loose or intermittent connection, chafed wire partially shorting to ground, moisture or corrosion in a connector, etc. It's likely intermittent, but will eventually get worse. When it's happening it will throw the code and give the engine the wrong amount of fuel causing stalling, performance issues, no start, etc. If it were me I would visually inspect the Injector wiring for chafing, check inside the connectors, and if I didnt find anything just throw a new injector at it. You can also check resistance of the injector, but if it's intermittent it may check out ok when you happen to check it.