P1126 2000 NISSAN ALTIMA Possible Causes
- Low engine coolant level
- Faulty thermostat
- Thermostat seal leakage
- Engine coolant temperature sensor
How to Fix P1126 Code 2000 NISSAN ALTIMA?
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.
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 been running long enough.
Possible Symptoms
Engine light on (or engine service warning light soon)
P1126 2000 NISSAN ALTIMA Meaning
The engine coolant temperature has not risen sufficiently to open the thermostat even though the engine has been running long enough. This is due to a leak in the seal or a stuck open thermostat.