Engine-Codes - Generic - P1288

P1288 Code - Cylinder Head Temp Sensor Out Of Self Test Range

- Code Popularity: 43,055 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1288?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Wrong thermostat
  • Engine overheated
  • Low engine coolant level
  • Faulty Cylinder Head Temperature (CHT) sensor
  • Cylinder Head Temperature sensor harness is open or shorted
  • Cylinder Head Temperature sensor circuit poor electrical connection

Code Tech Notes

This indicates the Cylinder Head Temperature (CHT) sensor is out of the Self-Test range. The engine is not at a normal operating temperature.

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How to Fix the DTC P1288?

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 P1288 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.

What are Code Possible Symptoms?

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

What Does the P1288 Code Mean?

The Cylinder Head Temperature (CHT) Sensor is mounted into the wall of the cylinder head and is not connected to any coolant passages. The CHT sends a signal to the Powertrain Control Module (PCM) indicating the cylinder head temperature. If the temperature exceeds 126°C (-258°F), the PCM disables four fuel injectors at a time. The PCM will alternate which four injectors are disabled every 32 engine cycles. The four cylinders that are not being fuel injected act as air pumps to aid in cooling the engine. If the temperature exceeds 154 °C (310°F), the PCM disables all of the fuel injectors until the engine temperature drops below 154°C (310°F).

P1288 Code - Cylinder Head Temp Sensor Out Of Self Test Range

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Code P1288 Information for Specific Makes

  • P1288 Acura Rocker Arm Oil Pressure Switch Circuit Low Voltage
  • P1288 Audi Turbocharger Bypass Valve short to B+
  • P1288 BMW Switching Solenoid for Air Assisted Injection Valves Bank 2 Control Circuit Signal Low
  • P1288 Buick Accelerator Pedal Position Sensor 3 Circuit High Voltage
  • P1288 Cadillac Accelerator Pedal Position Sensor 3 Circuit High Voltage
  • P1288 Chevrolet Accelerator Pedal Position Sensor 3 Circuit High Voltage
  • P1288 Chrysler Short Runner Valve Circuit Condition
  • P1288 Dodge Short Runner Valve Circuit Condition
  • P1288 Ford Cylinder Head Temperature Sensor Out of Self-Test Range  
  • P1288 GMC Accelerator Pedal Position Sensor 3 Circuit High Voltage
  • P1288 Honda Rocker Arm Oil Pressure Switch Circuit Low Voltage
  • P1288 Infiniti Air Fuel Ratio Sensor 1 Circuit Slow Response Bank 2
  • P1288 Jaguar Cylinder Head Temperature Sensor Out of Self-Test Range
  • P1288 Jeep Short Runner Valve Circuit Condition
  • P1288 Lincoln Cylinder Head Temperature Sensor Out of Self-Test Range
  • P1288 Mazda Cylinder Head Temperature Sensor Out of Self-Test Range
  • P1288 Mercury Cylinder Head Temperature Sensor Out of Self-Test Range
  • P1288 MINI Switching Solenoid for Air Assisted Injection Valves Bank 2 Control Circuit Signal Low
  • P1288 Nissan Air Fuel Ratio Sensor 1 Circuit Slow Response Bank 2
  • P1288 Volkswagen Turbocharger Bypass Valve short to B+

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