AutoCodes – Generic – P1557

P1557 Code - Charge Pressure Positive Deviation

Quick Answer

P1557 indicates Charge Pressure Positive Deviation. Common causes include External leak on intake or exhaust side, Faulty Charge Air Pressure Sensor, Faulty Wastegate Regulator Valve. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1557 indicates Charge Pressure Positive Deviation.
Common causes: Common causes include External leak on intake or exhaust side, Faulty Charge Air Pressure Sensor, Faulty Wastegate Regulator Valve.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 25,053

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 30, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1557 Description

OBDII Code P1557 - Charge Pressure Positive Deviation - AutoCodes.com — P1557 Code - Charge Pressure Positive Deviation

What does this mean?

What are the Possible Causes of the DTC P1557?

External leak on intake or exhaust side
Faulty Charge Air Pressure Sensor
Faulty Wastegate Regulator Valve
Fualty Turbocharger

How to Fix the DTC P1557?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1557 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1557 code?

Need more information on how to fix the P1557 code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Makes

P1557 Audi — Charge Pressure Positive Deviation
P1557 Lexus — DC/DC Converter Temperature Sensor Circuit
P1557 Toyota — DC/DC Converter Temperature Sensor Circuit
P1557 Volkswagen — Charge Pressure Positive Deviation

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.