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Engine-Codes – Generic – P115E

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

Quick Answer

The P115E code indicates that the throttle actuator control throttle body air flow trim is at its maximum limit. Common causes include Dirty or clogged throttle body, Faulty throttle actuator control module, Vacuum leaks. 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 indicates Throttle Actuator Control Throttle Body Air Flow Trim At Max Limit.
Common causes
Common causes include Dirty or clogged throttle body, Faulty throttle actuator control module, Vacuum leaks.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code P115E Description

The P115E code indicates that the throttle actuator control throttle body air flow trim is at its maximum limit. This means that the engine control module (ECM) has detected that the airflow entering the engine through the throttle body is not within the expected range, causing the trim to reach its maximum limit. This can lead to issues with fuel efficiency, engine performance, and emissions output. The throttle body is responsible for regulating the amount of air that enters the engine, which is crucial for proper combustion and overall engine operation. If this issue is not addressed, it can lead to further damage to the engine and other related components.

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

Common Causes of P115E

  1. Dirty or clogged throttle body
  2. Faulty throttle actuator control module
  3. Vacuum leaks
  4. Wiring or electrical issues
  5. Faulty oxygen sensor

Symptoms of P115E

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Loss of power or acceleration
  4. Check Engine Light illuminated
  5. Engine misfires

How to Fix P115E

  1. Perform a thorough inspection of the throttle body and clean it if necessary.
  2. Check and replace the throttle actuator control module if it is faulty.
  3. Inspect for any vacuum leaks and repair or replace any damaged hoses.
  4. Check the wiring and connectors related to the throttle body for any issues.
  5. Test and potentially replace the oxygen sensor if deemed faulty.

Cost to Fix P115E

The cost of repairing a throttle actuator control throttle body air flow trim issue can vary depending on the specific cause of the problem and the make and model of the vehicle. On average, the repair cost can range from $200 to $500, including parts and labor. However, it's important to note that diagnostic time and labor rates can vary, so it's best to check with local auto repair shops for a more accurate estimate.

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Code P115E Information for Specific Makes

  • P115E Buick — O2 Reference Voltage Circuit (NOx Sensor 1)
  • P115E Cadillac — O2 Reference Voltage Circuit (NOx Sensor 1)
  • P115E Chevrolet — O2 Reference Voltage Circuit (NOx Sensor 1)
  • P115E Ford — Throttle Actuator Control Throttle Body Air Flow Trim At Max Limit
  • P115E GMC — O2 Reference Voltage Circuit (NOx Sensor 1)
  • P115E Lincoln — Throttle Actuator Control Throttle Body Air Flow Trim At Max Limit
  • P115E Mercury — Throttle Actuator Control Throttle Body Air Flow Trim At Max Limit
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.

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