OBD-II trouble code
P0210: Injector Circuit/Open - Cylinder 10
SAE J2012 APR2002: injector circuit/open, cylinder 10. Nothing in that row places the injector at the firewall. The printed pair is RepairPal's one-injector average, which does not list a tenth cylinder.
Quick facts
- System
- Powertrain
- Category
- Fuel Injectors
- Severity
- Medium severity
- Drivable
- Usually safe to drive short-term
- Repair cost range
- $770 – $950 (one fuel injector replacement, parts and labor, RepairPal national average updated 3 September 2026; that page has no cylinder-10 line, and wiring is outside this pair)
- DIY difficulty
- Shop recommended
Browse every code in P0200–P0299, or start from the full code library.
What does P0210 mean?
SAE J2012 APR2002 names P0210 Injector Circuit/Open - Cylinder 10. P0288 is cylinder 10 injector circuit low and P0289 is cylinder 10 injector circuit high. Section 3.1 allows Circuit/Open where a high or low split is not feasible, and also where those splits exist as their own codes.
No location is in the SAE row. A claim that cylinder 10 is the rearmost injector on the driver's bank, against the firewall, or behind an engine cover on a van, is not in J2012 and is not in the 2009 Cobalt chart, the 2008 Envoy chart, or 07_GRP01_All Engines. Those three documents do not define P0210 at all. GRP01's injector-control rows stop at cylinder 8. Do not reuse their 3 ms or 6 ms times here.
The repair starts with the diagram. If this engine has no tenth injector, the stored number needs to be read again. If it does, the driver circuit is tested as this chart prints it. Three electrical results stay separate: an open, proved by continuity with both ends disconnected and the ignition off; a short to ground, proved with the injector and the module disconnected so a driver path is not the short; and a short to voltage, proved with the circuit powered, the injector unplugged, and the module disconnected, and only when the voltage is not the bias the chart assigns to an open line.
A wiggle test with the engine running, at a connector you cannot see, is not the first measurement. Do the disconnected electrical tests first. If a later check really does require the engine to run, keep hands, sleeves, and leads clear of the belt and of a fan that can start on its own, and treat the exhaust as hot.
RepairPal's injector average does not itemize cylinder 10. Depressurize before the injector is removed. Do not put battery voltage on a high-pressure injector to see if it clicks.
Common causes
- An open in the cylinder 10 control wire, both ends disconnected, ignition off
- A short to ground that remains with the module disconnected
- A short to voltage that remains with the module disconnected and is not the chart's open-circuit bias
- A winding out of this chart's resistance spec, injector unplugged, ignition off
- A firewall or bank location assumed from the number 10
- A millisecond limit copied from GRP01 cylinders 1 through 8
- A module driver, after the three wire tests pass
Symptoms
- P0210 stored
- P0288 or P0289 when low or high is the stored row
- No SAE description of where cylinder 10 sits
- An engine that has a tenth injector, located only by its diagram
- A code on an engine that does not have ten injectors
Diagnostic steps
- 1.Count injectors on the diagram. Ten is a parts job only when the tenth injector is real.
- 2.Do not aim the work at a firewall, a driver-side bank, or an engine cover because of the code number.
- 3.Leave GRP01, the Cobalt lamp, the Envoy X104 step, and the Volkswagen T8 part number on the codes those documents actually list.
- 4.Ignition off. Unplug cylinder 10. Measure the coil against this vehicle's spec.
- 5.Disconnect the module end. Continuity of the control wire. Resistance of that wire to ground. Then key on, module still disconnected, voltage on the control wire compared with the disconnected-circuit voltage in this chart.
- 6.Skip a running-engine wiggle until the static tests are done. If the engine must run for a later check, stay clear of the belt and the fan.
- 7.Depressurize. RepairPal's 3 September 2026 replacement description is the intake-off job for the engines it covers, and that page says it is not DIY. It is not a cylinder-10 location.
- 8.Verify with this calibration's monitor.
Repair cost
$770 – $950 (one fuel injector replacement, parts and labor, RepairPal national average updated 3 September 2026; that page has no cylinder-10 line, and wiring is outside this pair)
RepairPal's fuel injector replacement, updated 3 September 2026, averages $768–$953, rounded to $770–$950. Labor is $304–$446 and parts are $464–$507. The 2026 Hyundai Tucson line is $456–$604 and is outside the pair. No tenth-injector line was published on that national page. Wiring is not in the pair. Check-engine diagnosis is $125–$183 and is separate.
Estimate your repair
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Open the Repair Cost Estimator with fuel injector replacement preselected. Adjust labor rate and vehicle category to fit your situation.
DIY vs shop
Leave this one to a qualified shop. The barrier here is high-pressure fuel components, where residual pressure remains after shutdown and escaping fuel can penetrate skin. DIY attempts often produce a more expensive problem than the original code.