AutoCodes – Generic – P1545

P1545 Code - Throttle Position Control Malfunction

Quick Answer

P1545 indicates Throttle Position Control Malfunction. Common causes include Faulty Throttle Valve Control Module, Faulty Throttle Actuator, Throttle Actuator 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: P1545 indicates Throttle Position Control Malfunction.
Common causes: Common causes include Faulty Throttle Valve Control Module, Faulty Throttle Actuator, Throttle Actuator 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 23,083

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 29, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1545 Description

OBDII Code P1545 - Throttle Position Control Malfunction - AutoCodes.com — P1545 Code - Throttle Position Control Malfunction

What does this mean?

What are the Possible Causes of the DTC P1545?

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

How to Fix the DTC P1545?

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 P1545 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 P1545 code?

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Need Help with the Code?

Get the P1545 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1545 Audi — Throttle Position Control Malfunction
P1545 BMW — Pedal Position Sensor
P1545 Buick — A/C Clutch Relay Control Circuit
P1545 Cadillac — A/C Clutch Relay Control Circuit
P1545 Chevrolet — A/C Clutch Relay Control Circuit
P1545 GMC — A/C Clutch Relay Control Circuit
P1545 Hyundai — A/C Compressor Switch Open/Short
P1545 Isuzu — A/C Compressor Clutch Relay Control Circuit Malfunction
P1545 MINI — Pedal Position Sensor
P1545 Mitsubishi — DOR Radiator Tampering Monitor Temp Change After Thermostat Open
P1545 Volkswagen — Throttle Position Control Malfunction

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 P1545 Code

1. What are the common symptoms of OBDII code P1545 (Throttle Position Control Malfunction)?

- Common symptoms include poor acceleration, rough idling, stalling, and difficulty maintaining a consistent speed.

2. What are the possible causes of OBDII code P1545?

- The code P1545 can be triggered by issues such as a faulty throttle position sensor, damaged wiring or connectors, or a problem with the throttle control module.

3. How can I diagnose the cause of OBDII code P1545?

- Diagnosing the issue typically involves using a scan tool to read the code, checking the throttle position sensor for proper operation, inspecting wiring for damage, and testing the throttle control module.

4. Can I drive my vehicle with OBDII code P1545 active?

- It is not recommended to drive your vehicle with the P1545 code active, as it can lead to poor performance, potential stalling, and safety hazards on the road.

5. How can I repair OBDII code P1545 at home?

- Repairing the P1545 code may involve replacing the throttle position sensor, repairing damaged wiring or connectors, or resetting the throttle control module. It's advisable to consult a professional if you're unsure.

6. Is it safe to reset the OBDII code P1545 and continue driving?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, it is likely to reappear. It's best to diagnose and repair the problem to ensure safe driving.

7. Can a dirty throttle body cause OBDII code P1545?

- While a dirty throttle body can affect overall engine performance, it is unlikely to directly trigger the P1545 code. However, regular maintenance of the throttle body is still important for optimal engine operation.

8. Does weather or environmental conditions affect OBDII code P1545?

- Extreme weather conditions or environmental factors can sometimes contribute to electrical issues that may trigger the P1545 code. Ensuring proper insulation and protection of wiring can help mitigate these effects.

9. Can a low battery voltage trigger OBDII code P1545?

- Yes, low battery voltage can potentially cause electrical malfunctions that lead to the P1545 code being triggered. It's important to ensure your vehicle's battery is in good condition to prevent such issues.

10. How much does it typically cost to repair OBDII code P1545 at a mechanic?

- The cost of repairing the P1545 code can vary depending on the specific issue, parts needed, and labor rates. On average, expect to pay anywhere from $100 to $500 for repairs related to this code.