P0210

P0210 flags the cylinder 10 injector circuit and only appears on V10 and V12 engines, most commonly the Ford 6.8L Triton V10 Super Duty trucks, Dodge Viper 8.3L V10, BMW S85 5.0L V10 in M5 and M6, and Audi/Lamborghini 5.0L/5.2L V10. Cylinder 10 is the rearmost cylinder on the second bank and shares all the same access and heat-soak vulnerabilities as cylinder 8 on a V8: hardest to reach, hottest in the engine bay, and the first to fail when a shared bank-2 ground or 12V feed degrades. Cheapest-first ladder: noid light to confirm PCM pulse arrival at the cylinder 10 connector, resistance check at the injector (port: 11-17 ohms, GDI: 1-3 ohms, all ten cylinders within 0.5 ohm of each other), and scope the driver waveform for clean ground pull-down within 0.5V of ground at 2.5 to 3.2 ms warm-idle. Always check the bank-2 ground strap behind the rear of the head before condemning the injector. The expensive misdiagnosis is intake-removal injector replacement at $900 to $1,400 labor on a Ford V10 when the fix was a $15 ground strap.

Vehicle-specific patterns: 1999-2010 Ford 6.8L Triton V10 in Super Duty trucks and Excursion is the dominant P0210 platform, with cylinder 10 connector corrosion from firewall water intrusion and the rear-of-bank-2 ground splice that fatigues over time (Ford TSB 06-19-8 covers the harness repair); 2006-2010 BMW S85 V10 M5 and M6 throws P0210 with injector solenoid failure on cylinder 10 paired with VANOS and rod-bearing concerns; 2003-2010 Dodge Viper V10 sees P0210 less commonly but tied to harness chafe at the valve cover; 2009-2014 Audi R8 5.2L V10 sees P0210 from a single failed direct injector that requires R8-specific coding via VCDS or ODIS after replacement. Estimated repair: $120 to $1,900.