AutoCodes – Pontiac – C1243 Pontiac

C1243 Pontiac Code - Pump Motor Stalled

Quick Answer

The system relay is energized when the ignition is ON. Common causes include Faulty Brake Pressure Modulator Valve (BPMV), Brake Pressure Modulator Valve (BPMV) harness is open or shorted, Brake Pressure Modulator Valve (BPMV) 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: C1243 Pontiac indicates Pump Motor Stalled.
Common causes: Common causes include Faulty Brake Pressure Modulator Valve (BPMV), Brake Pressure Modulator Valve (BPMV) harness is open or shorted, Brake Pressure Modulator Valve (BPMV) 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 1,691

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, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1243 Pontiac Description

The system relay is energized when the ignition is ON. The system relay supplies voltage to the solenoid valves and the pump motor. This voltage is referred to as the system voltage. The Electronic Brake Control Module (EBCM) controls each solenoid valve by grounding the solenoid. The EBCM controls the pump motor by grounding the control circuit. The pump serves 2 purposes:
- Transfers brake fluid from the brake calipers to the master cylinder reservoir during pressure decrease events
- Transfers brake fluid from the master cylinder reservoir to the brake calipers during pressure increase events

OBDII Code C1243 Pontiac - Pump Motor Stalled - AutoCodes.com — C1243 Pontiac Code - Pump Motor Stalled

What does this mean?

What are the Possible Causes of the DTC C1243 Pontiac?

Faulty Brake Pressure Modulator Valve (BPMV)
Brake Pressure Modulator Valve (BPMV) harness is open or shorted
Brake Pressure Modulator Valve (BPMV) circuit poor electrical connection
Faulty Electronic Brake Control Module (EBCM)

How to Fix the DTC C1243 Pontiac?

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 C1243 Pontiac 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 C1243 Pontiac Code

1. What does OBDII code C1243 for Pontiac "Pump Motor Stalled" mean?

The code C1243 indicates that the pump motor within the Pontiac's electronic stability control (ESC) system has stalled.

2. What are the common symptoms of OBDII code C1243 in a Pontiac?

Common symptoms include the ESC warning light illuminating on the dashboard, loss of stability control, and potential issues with the vehicle's traction control system.

3. What are the possible causes of OBDII code C1243 in a Pontiac?

The code C1243 can be triggered by a faulty ESC pump motor, damaged wiring or connectors in the ESC system, low brake fluid levels, or a malfunctioning ESC module.

4. How can I diagnose the issue related to OBDII code C1243 in my Pontiac?

To diagnose the problem, it is recommended to perform a thorough inspection of the ESC system components, check the brake fluid levels, and use a diagnostic scanner to retrieve additional fault codes.

5. Can I continue driving my Pontiac with OBDII code C1243 present?

It is not advisable to drive the vehicle with the ESC system malfunctioning, as this could compromise the stability and control of the car, especially in challenging driving conditions.

6. What are some repair tips for fixing OBDII code C1243 in a Pontiac?

Repair options may include replacing the ESC pump motor, repairing damaged wiring or connectors, ensuring proper brake fluid levels, and reprogramming or replacing the ESC module if needed.

7. Is it possible to reset OBDII code C1243 in a Pontiac without fixing the underlying issue?

While clearing the fault code may temporarily turn off the warning light, it is crucial to address the root cause of the problem to prevent potential safety hazards and ensure the ESC system functions properly.

8. Can weather conditions or driving habits trigger OBDII code C1243 in a Pontiac?

Extreme weather conditions or aggressive driving behaviors can potentially exacerbate issues related to the ESC system, leading to the activation of code C1243.

9. Is it recommended to seek professional help for resolving OBDII code C1243 in a Pontiac?

Due to the complexity of the ESC system and the importance of stability control in a vehicle, it is advisable to consult a qualified mechanic or dealership to accurately diagnose and repair the problem.

10. How can I prevent OBDII code C1243 from reoccurring in my Pontiac?

Regular maintenance, such as checking brake fluid levels, inspecting ESC system components, and driving responsibly, can help prevent the recurrence of code C1243 and ensure the ESC system's reliability.