AutoCodes – Generic – C1803

C1803 Code - Motor Current Level/Position Release

Quick Answer

The Electric Parking Brake Control Module (EPBCM) monitors the Parking Brake Motor. Common causes include Faulty Parking Brake Motor, Parking Brake Motor harness is open or shorted, Parking Brake Motor 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: C1803 indicates Motor Current Level/Position Release.
Common causes: Common causes include Faulty Parking Brake Motor, Parking Brake Motor harness is open or shorted, Parking Brake Motor 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 5,137

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 Nov 30, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1803 Description

The Electric Parking Brake Control Module (EPBCM) monitors the Parking Brake Motor. The EPBCM sets the OBDII code when the Parking Brake Motor is not to factory specifications.

OBDII Code C1803 - Motor Current Level/Position Release - AutoCodes.com — C1803 Code - Motor Current Level/Position Release

What does this mean?

What are the Possible Causes of the DTC C1803?

Faulty Parking Brake Motor
Parking Brake Motor harness is open or shorted
Parking Brake Motor circuit poor electrical connection
Faulty Electric Parking Brake Control Module (EPBCM)

How to Fix the DTC C1803?

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 C1803 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 C1803 code?

Need more information on how to fix the C1803 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1803 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C1803 Infiniti — Air Suspension Exhaust Solenoid
C1803 Jaguar — Motor Current Level/Position Release
C1803 Nissan — Air Suspension Exhaust Solenoid

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 C1803 Code

1. What are the common symptoms of OBDII code C1803 (Motor Current Level/Position Release)?

- Common symptoms include difficulty starting the vehicle, loss of power steering, and illuminated warning lights on the dashboard.

2. What are the possible causes of OBDII code C1803?

- Possible causes of this code may include a faulty motor, damaged wiring or connectors, or issues with the motor control module.

3. How can I diagnose the issue related to OBDII code C1803?

- A thorough inspection of the motor, wiring, and connectors is recommended. Testing the motor's current level and position sensors using a multimeter can help pinpoint the problem.

4. Can I drive my vehicle with OBDII code C1803 present?

- It is not recommended to drive the vehicle with this code present, as it may lead to further damage or safety hazards due to potential loss of power steering.

5. How can I repair OBDII code C1803?

- Repairing this code may involve replacing the faulty motor or repairing damaged wiring/connectors. Clearing the code with an OBDII scanner after the repair is essential.

6. Is it possible to reset OBDII code C1803 without fixing the underlying issue?

- While clearing the code temporarily with an OBDII scanner is possible, it is crucial to address the root cause to prevent the code from reoccurring and ensure the vehicle's safety.

7. Are there any preventive maintenance tips to avoid OBDII code C1803?

- Regularly inspecting the motor and its components for any signs of wear or damage can help prevent issues leading to this OBDII code.

8. Can a DIY enthusiast fix OBDII code C1803 at home?

- Depending on the skill level and knowledge of automotive repairs, some DIY enthusiasts may be able to diagnose and repair this code at home. However, professional help is recommended for complex issues.

9. How much does it typically cost to repair OBDII code C1803?

- The repair cost for this code can vary depending on the extent of the damage, parts needed, and labor rates. It is advisable to consult a mechanic for an accurate estimate.

10. Will OBDII code C1803 cause the vehicle to fail an emissions test?

- Yes, OBDII code C1803 can cause the vehicle to fail an emissions test due to the potential impact on the motor's performance and emissions control system.