Powertrain Definition only Lights the check engine lamp

P262E: Sensor Reference Voltage G Circuit High

Standardized SAE J2012 code · P26xx — Computer and output circuits

What does P262E mean?

The 5 V reference G voltage is above the expected level. Typical causes are a short to battery or an internal regulator failure.

The code tells you which monitor failed, not which part is broken. Test before replacing parts.

Common causes

  • High Reference wire shorted to a B+ supply
  • Medium Internal 5 V regulator failed
  • Low Connector pins corroded - high contact resistance

Likelihood is a general estimate across vehicles; your make and model may differ.

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