AutoCodes – Mercury – P115E Mercury

P115E Mercury Code - Throttle Actuator Control Throttle Body Air Flow Trim At Max Limit

Quick Answer

During idle, the Powertrain Control Module (PCM) monitors the throttle angle and air flow. Common causes include Carbon deposits around the throttle plate. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: P115E Mercury indicates Throttle Actuator Control Throttle Body Air Flow Trim At Max Limit.
Common causes: Common causes include Carbon deposits around the throttle plate.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 1,925

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Basic DIY (1 / 3)

What is this?

Table of contents Created and updated by William Orellana on Oct 15, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P115E Mercury Description

During idle, the Powertrain Control Module (PCM) monitors the throttle angle and air flow. If the air flow is determined to be less than expected, the PCM adjusts the throttle angle to compensate. The air flow reduction is typically the result of engine deposit buildup around the throttle plate. The P115E code indicates the PCM has reached the maximum allowed compensation and is no longer able to compensate for the buildup.

OBDII Code P115E Mercury - Throttle Actuator Control Throttle Body Air Flow Trim At Max Limit - AutoCodes.com — P115E Mercury Code - Throttle Actuator Control Throttle Body Air Flow Trim At Max Limit

What does this mean?

What are the Possible Causes of the DTC P115E Mercury?

Carbon deposits around the throttle plate

How to Fix the DTC P115E Mercury?

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 P115E Mercury 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.

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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.