If no coolant leaks are present, replacing the thermostat usually takes care of the problem.
Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
The cost to diagnose the P1126 2001 Nissan Altima Sedan code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.
The P1126 Code is detected when the engine coolant temperature does not reach to specified temperature even though the engine has run long enough.
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 the thermostat open stuck.
Need more information on how to fix the P1126 2001 Nissan Altima Sedan code? Get Access to Factory Service Manuals
Get the P1126 2001 Nissan Altima Sedan code diagnosed by a professional: Find a repair shop in your area