Engine-Codes - Buick - P1257 BUICK

P1257 BUICK - Supercharger System Overboost

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

How is the P1257 BUICK code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the P1257 BUICK code

Labor: 1.0

The cost to diagnose the P1257 BUICK code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

P1257 BUICK Meaning

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.

More Information

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