P0126: The coolant temperature is too low for stable engine operation
The coolant temperature is too low for stable engine operation.
| Code | P0126 |
|---|---|
| System | Engine and transmission |
| Group | P01xx, Air and fuel metering |
| Type | Generic: it means the same on every make |
How to read and clear P0126 with Final OBD
Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see P0126 with its description and whether it’s confirmed, pending or permanent.
If the engine stores it over standard OBD, with FREE you read this code with its explanation for nothing and clear it. With PRO you also read the faults of every control unit and clear them in all of them.
Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before an inspection. It’s all in how to read and clear fault codes and in inspections and OBD.
Similar codes
- P0122 Throttle or pedal position sensor A: low signal
- P0123 Throttle or pedal position sensor A: high signal
- P0124 Throttle or pedal position sensor A: intermittent signal
- P0125 Engine takes too long to warm up for fuel mixture control
- P0127 The intake air temperature is above normal
- P0128 Thermostat: coolant not reaching normal operating temperature
- P0129 The barometric pressure is below normal
- P012A The turbocharger intake pressure sensor has an electrical fault
- P0100 Mass or volume air flow sensor circuit fault
- P0101 Air flow sensor range or performance problem
- P0102 Air flow sensor circuit low input
- P0103 Air flow sensor circuit high input
What does code P0126 mean?
The coolant temperature is too low for stable engine operation.
How do you clear P0126?
With an OBD2 scanner and an app like Final OBD, which clears it for free if it’s stored by the engine control unit. But clearing it only turns the light off: if the cause isn’t fixed, P0126 comes back.
Read it on your car
Final OBD reads and clears engine faults through standard OBD for free, each one explained in plain English. With PRO it also reads the faults of every control unit, each make’s own codes included, and clears them in all of them.
