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P05F9 Powertrain

Stop-Start Status Signal Circuit

A general circuit fault on the stop-start status signal - the bus or hardwire that tells other modules whether the engine is auto-stopped or running.

Affected components

  • Stop start status signal

Common causes

  • High likelihood: Open in signal line

Diagnostic notes

  • The malfunction indicator lamp may illuminate

Sources

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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