Error code

OBD2 P0210

OBD2P0210
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Injector Circuit/Open - Cylinder 10.

Severity

highThe vehicle may be drivable but should not be driven long distances due to potential engine damage.

Summary

P0210 indicates an issue with the fuel injector circuit for cylinder 10, meaning there's a problem either with the injector itself or its electrical connection.

Symptoms

  • Engine misfire
  • Engine stalls
  • Engine cranks but doesn't start

Common Causes

  • Failed fuel injector in cylinder 10
  • Faulty wiring or connector for the fuel injector circuit of cylinder 10
  • Problem with the Powertrain Control Module (PCM) driver for cylinder 10

Diagnosis

  1. Visually inspect the fuel injector and its connections for any obvious issues.
  2. Use a scan tool to check for misfire codes (P0301-P0308) that might indicate which cylinder is affected.
  3. Test the control circuit using a noid light by disconnecting the injector and inserting the light into the connector. The light should flash when cranking the engine.
  4. Check for power to the injector using a test light connected to ground and touching it to the B+ pin on the injector connector.
  5. Verify that the PCM is properly grounding the injector by attaching one end of a test light to battery power and the other to the ground side of the injector connector. The light should illuminate when cranking the engine.
  6. Use a digital multimeter to check for continuity between the PCM and injector, or measure resistance between the two terminals of the fuel injector.

Fixes

  • Replace the faulty fuel injector in cylinder 10.

FAQ

What should I do if my car has a P0210 code?

You should perform visual inspections and electrical tests to identify whether the issue is with the fuel injector or its wiring. If you're not comfortable doing this yourself, take your vehicle to a professional mechanic.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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