P0210: Cylinder 10 Injector A Circuit/Open

P0210 reports an electrical fault, mainly an open circuit, in the injector circuit of cylinder 10. The engine module watches each injector output: GM flags an open circuit at an impedance of 200 kΩ or more – on direct injection and diesel engines in 10 of 20 or 5 of 10 samples and with the warning light in the first trip, on some port-injected engines only after two trips. Ford's port injection reads a fault bit from the driver chip that covers open, short to ground and short to voltage alike; Ford diesels report only the open circuit here and shorts as P0288/P0289. Cylinder 10 exists only on ten-cylinder engines; documented is Ford's 6.8 litre V10, whose check covers P0201 to P0210 with the warning light.

Cylinder 10 is numbered according to the manufacturer: check your engine's manual before working on it.

Symptoms

• Check engine light on
• Misfire and rough running, misfire code P0310
• Loss of power, rough idle
• Limp mode possible on diesel and direct injection

Most likely causes

• Connector at the cylinder 10 injector loose, corroded or with a broken or pushed-back pin
• Injector coil open
• Wire between module and injector open or chafed (heat, rodents)
• Injector supply missing (fuse, relay) – then usually several cylinders at once
• Driver stage in the engine module faulty

What to check, in order

Start with the simplest. You can tick off each step.

1. Check the connector and wiring of the injector indicated
2. Check the continuity of the wire between the component and the control module.
3. Measure the resistance and compare it with the manufacturer's specification
4. Check the control signal with an oscilloscope; on direct injection or diesel engines, leave this to a repair shop because of the high voltages
5. On diesels, check the per-cylinder injection corrections

Good to know

• Repair difficulty: hard
• It can trigger limp mode.
• It affects emissions.

What each character of P0210 means

• P: Powertrain: engine and transmission
• 0: Generic code: same on every make
• 2: Fuel injection
• 10: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0210?

Drive as little as possible and go to a repair shop. If you smell fuel or the engine is shaking badly, do not keep driving.

What causes code P0210?

The most common causes are: connector at the cylinder 10 injector loose, corroded or with a broken or pushed-back pin; injector coil open; wire between module and injector open or chafed (heat, rodents).

Related codes

• P0288Cylinder 10 Injector A Circuit Low
• P0289Cylinder 10 Injector A Circuit High
• P02F7Cylinder 10 Injector Circuit Range/Performance
• P0310Cylinder 10 Misfire Detected
• P0300Random/Multiple Cylinder Misfire Detected
• P021DCylinder 10 Injection Timing

Sources

• law.cornell.edu: 13 CCR 1968.2
• newtonnet.co.uk: fordobd2012
• roushcleantech.com: Roush CleanTech Diagnostics Manual DA 8.5.18

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.