P1288: Cylinder Head Temp Sensor Out Of Self Test Range

MediumPowertrainEngine/Powertrain

What does P1288 mean?

P1288 is a diagnostic trouble code indicating "Cylinder Head Temp Sensor Out Of Self Test Range". A sensor in the engine/powertrain is reporting abnormal data or has lost communication with the ECU. Sensors can fail due to age, contamination, heat exposure, or wiring issues.

Common causes

  • Faulty engine/powertrain component
  • Wiring or connector issue in the related circuit
  • Failed sensor providing incorrect readings
  • Software/calibration issue requiring ECU update
  • Related component causing secondary fault

What should you do?

Schedule a diagnostic appointment at your earliest convenience. The vehicle is generally safe to drive short distances, but the underlying issue should be addressed to prevent it from worsening.

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Related codes

P1287Fuel Pulse In Range But Higher Than Expected
P1289Cylinder Head Temp Sensor High Input
P1286Fuel Pulse In Range But Lower Than Expected
P1290Cylinder Head Temp Sensor Low Input