OBDII Code List

P1257 BUICK - Supercharger System Overboost

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible symptoms

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

P1257 Buick Description

With the engine running, the Intake Air Temperature (IAT) sensor input more than 14°F, then the Powertrain Control Module (PCM) detects that the engine torque was above a maximum threshold value (value vanes by commanded gear and rpm) for 6 seconds.
OBDII Code P1257 Buick - Supercharger System Overboost -

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P1257 BUICK Comments

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