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P012800

Unreasonable thermostat performance (the water temperature cannot reach the nominal opening temperature of the thermostat)

P012800 is described as “Unreasonable thermostat performance (the water temperature cannot reach the nominal opening temperature of the thermostat)” in the Changan reference. Other reference families are shown below; select the scope relevant to your vehicle.

Manufacturer reference family

Changan: P012800

en

Unreasonable thermostat performance (the water temperature cannot reach the nominal opening temperature of the thermostat)

ru

ECU. Термостат - не достигается температура открытия.

Reference namespace
changan
Source revision
legacy-oem-dtc-r2-20260924

Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.

Related catalog brands: Changan.

26 profiles assigned this reference family

2 more related profiles are listed in the vehicle directory.

Manufacturer reference family

Genesis / Hyundai / Kia: P012800

ru

Термостат охлаждающей жидкости (температура охлаждающей жидкости ниже уставки термостата); Термостат (температура ниже уставки термостата)

Reference namespace
hyundai-kia
Source revision
legacy-oem-dtc-r2-20260924

Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.

Related catalog brands: Kia, Genesis, Hyundai.

401 profiles assigned this reference family

377 more related profiles are listed in the vehicle directory.

What should I check before using this definition?

Keep the full code, module, status and freeze-frame data. Confirm the vehicle’s make, model, year and current manufacturer service information before choosing a repair. This entry does not identify a failed part by itself.

Organize a scan report or recording
Source and applicability

OBD Lens production library legacy-owner-2026-10-09-v81. This is a scoped technical reference, not a scan of your car. A catalog relationship does not certify that every ECU, year or engine returns the same signal or code definition.

Read the reference method

OBD Lens reference library · catalog legacy-owner-2026-10-09-v81. Sources and scope