AutoCodes – Acura – P2118 Acura

P2118 Acura Code - Throttle Actuator Current Range/Performance Problem

Quick Answer

The Electronic Throttle Control System (ETCS) controls the throttle valve opening. Common causes include Faulty Throttle Actuator Control Actuator, Throttle Actuator Control Actuator harness is open or shorted, Throttle Actuator Control Actuator circuit poor electrical connection. 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: P2118 Acura indicates Throttle Actuator Current Range/Performance Problem.
Common causes: Common causes include Faulty Throttle Actuator Control Actuator, Throttle Actuator Control Actuator harness is open or shorted, Throttle Actuator Control Actuator circuit poor electrical connection.
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 5,225

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2118 Acura Description

The Electronic Throttle Control System (ETCS) controls the throttle valve opening. The system is composed of the throttle actuator, the throttle valve, Throttle Position (TP) sensors A and B, the throttle actuator control module, the throttle actuator control module relay, the Accelerator Pedal Position (APP) sensor, and the Powertrain Control Module (PCM). The Accelerator Pedal Position (APP) sensor is operated via the throttle cable to determine the accelerator opening value when the driver presses the accelerator pedal. The accelerator pedal opening value is converted to a signal in the APP sensor and transmitted to the PCM to compute the target position. The target position signal is then transmitted to the throttle actuator control module. The throttle actuator control module determines the throttle valve target position according to the signal received and operates the throttle actuator to move the throttle valve to the target position. The actual throttle valve position is determined by TP sensor A installed in the throttle body. The throttle actuator control module compares the throttle valve target opening angle and the actual throttle valve opening angle from TP sensor A, and when the difference exceeds the specification, the throttle actuator control module transmits the malfunction data to the PCM. When the PCM receives the malfunction data from the throttle actuator control module, the PCM detects the malfunction of the throttle actuator system and a DTC is stored.

OBDII Code P2118 Acura - Throttle Actuator Current Range/Performance Problem - AutoCodes.com — P2118 Acura Code - Throttle Actuator Current Range/Performance Problem

What does this mean?

What are the Possible Causes of the DTC P2118 Acura?

Faulty Throttle Actuator Control Actuator
Throttle Actuator Control Actuator harness is open or shorted
Throttle Actuator Control Actuator circuit poor electrical connection

How to Fix the DTC P2118 Acura?

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 P2118 Acura 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.

Frequently Asked Questions about P2118 Acura Code

1. What does the OBDII code P2118 mean on an Acura?

P2118 indicates a "Throttle Actuator Current Range/Performance Problem," meaning the electronic throttle control system has a fault, often due to electrical or mechanical issues.

2. What are the common symptoms of code P2118 in an Acura?

Symptoms include reduced engine power, poor throttle response, the vehicle entering "limp mode," and the Check Engine Light illuminating.

3. What causes the P2118 code to appear on an Acura?

Common causes include a faulty throttle body, damaged throttle position sensor, wiring or connector issues, or a failing powertrain control module (PCM).

4. Can I drive my Acura with a P2118 code?

It is not recommended to drive with this code as the vehicle may experience reduced power or unsafe driving conditions. Immediate diagnosis and repair are advised.

5. How is the P2118 code diagnosed on an Acura?

A mechanic will use an OBDII scanner to confirm the code, inspect the throttle body and sensors, check for damaged wiring or connectors, and test the throttle actuator's electrical circuits.

6. How do I fix the P2118 code on my Acura?

Repairs may involve cleaning or replacing the throttle body, repairing damaged wiring or connectors, replacing faulty sensors, or reprogramming the PCM if necessary.

7. Is a dirty throttle body a possible cause of the P2118 code?

Yes, a dirty or carbon-clogged throttle body can cause the throttle actuator to perform outside its normal range, triggering the P2118 code.

8. How much does it cost to repair the P2118 code on an Acura?

Repair costs can range from $150 to $600, depending on whether the issue is a simple cleaning or requires component replacements like the throttle body or sensors.

9. Can a weak battery cause the P2118 code on an Acura?

Yes, a weak or failing battery can cause voltage irregularities that affect the throttle actuator's performance, potentially triggering the P2118 code.

10. Does resetting the Check Engine Light fix the P2118 code on an Acura?

Resetting the light may temporarily clear the code, but the underlying issue must be addressed to prevent the code from returning.