Engine-Codes - Nissan - P1126 2001 Nissan Altima Sedan

P1126 2001 Nissan Altima Sedan Code - Thermostat Function

- Code Popularity: 41,675 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
Table of contents
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What are the Possible Causes of the DTC P1126 2001 Nissan Altima Sedan?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Low engine coolant level
  • Faulty Thermostat
  • Leakage from sealing portion of thermostat
  • Engine coolant temperature sensor

Code Tech Notes

If no coolant leaks are present, replacing the thermostat usually takes care of the problem.

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How to Fix the DTC P1126 2001 Nissan Altima Sedan?

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.

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What is the Cost to Diagnose the Code?

Labor: 1.0

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.

When is the Code Detected?

The P1126 Code is detected when the engine coolant temperature does not reach to specified temperature even though the engine has run long enough.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P1126 2001 Nissan Altima Sedan Code Mean?

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.

P1126 2001 Nissan Altima Sedan Code - Thermostat Function

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