P1126 NISSAN – Thermostat Function
P1126 NISSAN Possible Causes
- Low engine coolant level
- Faulty thermostat
- Leak in thermostat sealing part
- Engine coolant temperature sensor
How to Fix P1126 NISSAN Code?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Technical Notes
If no coolant leak is present, replacing the thermostat usually resolves the issue.
When is the Code Detected?
The P1126 code is detected when the engine coolant temperature does not reach the specified temperature even though the engine has run long enough.
Symptoms
possible
- Engine light on (or engine service warning light soon)
P1126 NISSAN Meaning
The engine coolant temperature has not risen enough to open the thermostat even though the engine has run long enough. This is due to a leak in the seal or a stuck open thermostat.