OBD
P214C
SCR NOx Catalyst Outlet Temperature Too High
What it means
P214C stands for SCR NOx Catalyst Outlet Temperature Too High. P214C is a P code, so the fault sits in the engine, transmission and emissions systems. For P214C, the second digit places it in fuel and air metering. For P214C, work through the cause list below, cheapest checks first.
What to check first
For P214C, read the stored codes from every module, not just the engine, because related codes often name the same fault more precisely.
Check these first
- P214C: Faulty or contaminated sensor in the fuel/air metering circuit
- P214C: Damaged or shorted wiring or connector for the affected circuit
- P214C: Vacuum leak or intake system restriction
- P214C: Failing fuel pump, injector, or fuel pressure regulator
What to do next
P214C belongs to the fuel and air metering system. These are the general steps for P214C, and the exact cause on your vehicle can differ.
- P214C: Read freeze frame data and related codes with an OBD-II scanner
- P214C: Inspect the affected sensor wiring and connector for damage
- P214C: Compare live sensor readings (fuel trim, airflow, temperatures) to manufacturer specs
- P214C: Smoke test the intake system if lean or vacuum conditions are suspected
- P214C: Replace the failed component after confirming it with live data
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Updated
Generic SAE J2012 definition. Last updated 2026-08-30.