What Does P0210 Mean?
This code indicates a malfunction in the fuel injector circuit for cylinder 10. The ECM has detected an open, short, or resistance fault in the cylinder 10 injector driver circuit. This code applies to V10 and V12 engines. Cylinder 10 is not receiving proper fuel delivery pulses.
Common Causes
35%
Failed cylinder 10 fuel injector with internal coil open or short circuit
30%
Damaged or corroded wiring in the cylinder 10 injector circuit, often in hard-to-access rear engine locations
20%
ECM injector driver failure for the cylinder 10 output channel
15%
Power supply circuit fault in the injector harness feed affecting the bank containing cylinder 10
Diagnostic Steps
1
Step 1: Measure cylinder 10 injector coil resistance with the connector disconnected. Compare to manufacturer specification (typically 11-17 ohms for high-impedance injectors).
2
Step 2: Verify 12V power supply at the cylinder 10 injector connector with key on engine off.
3
Step 3: Use a noid light at the cylinder 10 connector during cranking to confirm ECM pulse signal delivery.
4
Step 4: If accessible, swap the cylinder 10 injector with an adjacent cylinder to isolate the fault between injector and wiring.
5
Step 5: Trace the cylinder 10 injector wiring from connector to ECM, paying careful attention to harness routing in the rear of the engine bay where heat and limited clearance cause wire deterioration.
Estimated Repair Cost
$200 - $850
Parts + labor, varies by vehicle and location
This code indicates a malfunction in the fuel injector circuit for cylinder 10. The ECM has detected an open, short, or resistance fault in the cylinder 10 injector driver circuit. This code applies to V10 and V12 engines. Cylinder 10 is not receiving proper fuel delivery pulses.
The most common cause of P0210 (Injector Circuit Malfunction - Cylinder 10) is: Failed cylinder 10 fuel injector with internal coil open or short circuit
Typical repair costs for P0210 range from $200 to $850, depending on the vehicle, location, and whether you do it yourself or go to a shop.
A dead cylinder 10 injector causes a misfire with unburned fuel entering the exhaust. On high-cylinder-count engines, the misfire may be subtle but still damages the catalytic converter over time.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0210 to identify the root cause.
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Quick Info
Category
Powertrain
System
Fuel Injection System
Difficulty
Type
Generic (SAE)
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