AutoCodes - OBDII Code List - P1257 CHEVROLET

P1257 CHEVROLET - Supercharger System Overboost

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

How do I fix code P1257 CHEVROLET?

Check 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.

Cost of diagnosing the P1257 CHEVROLET code

Labor: 1.0

The cost of diagnosing the P1257 CHEVROLET code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

P1257 Chevrolet 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 Chevrolet - Supercharger System Overboost -

P1257 CHEVROLET More Information

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