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P2B26 Powertrain

P2B26 — Hybrid/EV Electronics Coolant Temperature Sensor C Circuit Low

The vehicle hybrid control module detects a circuit low fault on the coolant temperature sensor C that monitors the power electronics cooling loop.

General code reference. Confirm the definition and diagnostic procedure for your vehicle's year, model and engine. A stored code alone does not identify a failed part.

Affected components

  • Hybrid electronics coolant temp sensor c
  • Wiring harness
  • Hybrid control module

Possible causes to check

These are possible checks, not a ranked diagnosis. Follow the vehicle manufacturer's test procedure before replacing parts.

  • Signal wire shorted to ground
  • Internal sensor short
  • Connector pins corroded - high contact resistance

Diagnostic notes

  • The malfunction indicator lamp may illuminate
  • Reduced-power or limp mode may occur

Related codes

Sources

Check each reference's vehicle and model-year scope. General background links do not establish which fault is most likely on your vehicle.

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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