OBDII Code List

P1257 CHEVROLET - Supercharger System Overboost

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

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 widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

P1257 CHEVROLET Possible Symptoms

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

P1257 CHEVROLET 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.
OBDII Code P1257 CHEVROLET - Supercharger System Overboost - Engine-Codes.com

P1257 CHEVROLET More Information

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