PowertrainP026F
CautionSeverity: Caution - get it checked when you can
Coolant Thermostat Performance
Key terms: Oxygen sensor: measures oxygen in the exhaust gas · Mass air flow sensor: measures the air going into the engine · Powertrain: engine, transmission and emissions
1What it means in plain English
This code is in the powertrain range that covers fuel and air metering, over-temperature, overspeed and transmission over-temperature conditions.
2Common causes
- Dirty or faulty mass air flow sensor
- Vacuum or intake air leak
- Weak fuel pump or clogged fuel filter
- Faulty fuel injector
- Faulty oxygen sensor
- Wiring or connector fault
3Can I drive?
Watch the temperature gauge. Stop safely and let the engine cool if the gauge climbs, steam appears, or a red warning light comes on.
This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.
4Brand data 7
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P026F | No description available | Powertrain |
| BYD | P026F | Electronic thermostat performance failure Brand | Powertrain |
| EOBD | P026F | Kinerja termostat pendingin Brand | Powertrain |
| Honda | P026F | No description available | Powertrain |
| Isuzu | P026F | No description available | Powertrain |
| Land Rover | P026F | Coolant Thermostat Performance Brand | Powertrain |
| Tata | P026F | No description available | Powertrain |
Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.
5Extended variant codes 3
These 7-character codes are manufacturer-specific variants of P026F and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| SsangYong | P026F00 | Thermostat control error Brand | Powertrain |
| Mercedes-Benz | P026F11 | The efficiency of the thermostat is too low. There is a short circuit to ground. Brand | Powertrain |
| Mercedes-Benz | P026F12 | The efficiency of the thermostat is too low. There is a short circuit to positive. Brand | Powertrain |
6Related codes
Browse Pxxx codes or P026xx codes.