AutoCodes – Generic – P1523

P1523 Code - Electronic Throttle Control Throttle Return

Quick Answer

The Throttle Actuator Control (TAC) module contains data which is essential for proper TAC operation. Common causes include Dead or weak battery, Faulty Throttle Actuator Control (TAC) module, Throttle Actuator Control (TAC) module harness is open or shorted. 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: P1523 indicates Electronic Throttle Control Throttle Return.
Common causes: Common causes include Dead or weak battery, Faulty Throttle Actuator Control (TAC) module, Throttle Actuator Control (TAC) module harness is open or shorted.
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 48,656

How popular is this code, among other codes? Medium

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 Aug 27, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1523 Description

The Throttle Actuator Control (TAC) module contains data which is essential for proper TAC operation. The TAC module continuously tests the integrity of this data. When the TAC module is unable to write or read data to and from random access memory (RAM), or the TAC module is unable to correctly read data from the flash memory or and internal TAC module processor fault is detected and the Diagnostic Trouble Code (DTC) is set.

OBDII Code P1523 - Electronic Throttle Control Throttle Return - AutoCodes.com — P1523 Code - Electronic Throttle Control Throttle Return

What does this mean?

What are the Possible Causes of the DTC P1523?

Dead or weak battery
Faulty Throttle Actuator Control (TAC) module
Throttle Actuator Control (TAC) module harness is open or shorted
Throttle Actuator Control (TAC) module circuit poor electrical connection

How to Fix the DTC P1523?

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 P1523 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 P1523 code?

Need more information on how to fix the P1523 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1523 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1523 Acura — Brake Booster Pressure Sensor Circuit High Voltage
P1523 Audi — Crash Signal From Airbag Control Module Implausible Signal
P1523 BMW — Camshaft Position Actuator 'A' Signal Low Bank 1
P1523 Buick — Electronic Throttle Control Throttle Return
P1523 Cadillac — Electronic Throttle Control Throttle Return
P1523 Chevrolet — Electronic Throttle Control Throttle Return
P1523 GMC — Electronic Throttle Control Throttle Return
P1523 Honda — Brake Booster Pressure Sensor Circuit High Voltage
P1523 Hyundai — Electronic Throttle Control System Malfunction Power Management
P1523 Isuzu — Electronic Throttle Control Throttle Return
P1523 KIA — VICS Solenoid Valve
P1523 Mazda — Intake Manifold Air Control Solenoid Circuit Malfunction
P1523 MINI — Camshaft Position Actuator 'A' Signal Low Bank 1
P1523 Volkswagen — Crash Signal From Airbag Control Module Implausible Signal

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 P1523 Code

1. What are common symptoms of OBDII code P1523 (Electronic Throttle Control Throttle Return)?

- Common symptoms include reduced engine power, difficulty accelerating, and the vehicle going into limp mode.

2. What are the potential causes of OBDII code P1523?

- The code P1523 can be caused by a faulty electronic throttle control system, a malfunctioning throttle position sensor, or issues with the throttle body.

3. How can I diagnose the cause of OBDII code P1523?

- Diagnosis typically involves using a scan tool to retrieve the trouble codes, checking the throttle position sensor for proper operation, and inspecting the throttle body for any faults.

4. Can I drive my vehicle with OBDII code P1523?

- It is not recommended to drive the vehicle with code P1523 as it can lead to safety issues and further damage to the engine or throttle system.

5. How can I repair OBDII code P1523?

- Repairing code P1523 may involve replacing the throttle position sensor, cleaning or replacing the throttle body, or repairing any wiring or connections related to the electronic throttle control system.

6. Will resetting the OBDII code P1523 clear the issue permanently?

- Resetting the code may temporarily clear the issue, but if the underlying problem is not addressed, the code is likely to return.

7. Can a DIY enthusiast fix OBDII code P1523 at home?

- Depending on the specific cause of the code, some DIY enthusiasts may be able to fix it at home by following repair guides and using basic tools.

8. Is OBDII code P1523 a common issue in certain vehicle models?

- Code P1523 related to electronic throttle control throttle return can be more common in vehicles with electronic throttle control systems, especially in newer models.

9. Will code P1523 affect the fuel efficiency of my vehicle?

- Yes, code P1523 can impact the fuel efficiency of the vehicle as it may cause the engine to run inefficiently or in a restricted mode.

10. How urgent is it to address OBDII code P1523 once it appears?

- It is important to address code P1523 promptly to prevent further damage to the engine or throttle system and to ensure safe operation of the vehicle.