The B1428 code signifies a problem with the ignition switched power run/crank relay circuit. When the Body Control Module (BCM) detects this code, it triggers the Engine Light or Service Engine Soon Warning Light.
Ignoring this code can result in performance or safety issues. To resolve the problem, you need to diagnose the circuit for any faults or damages. This may involve inspecting the wiring, connectors, and relay related to the ignition switched power run/crank relay circuit.
Once the issue is identified, you can repair or replace the faulty parts as necessary.
What does it mean
The B1428 code indicates a potential issue with the ignition switched power run/crank relay circuit.
While a faulty ignition switch can be a cause, other factors like a faulty relay or wiring issues can trigger this code.
Inspect the relay circuit, wiring harness, and connectors for damage, and check for broken or corroded pins.
Proper diagnosis and repair are necessary to resolve the issue.
what are the symptoms
Symptoms of the B1428 code can vary depending on the specific vehicle and its systems. It is important to address the underlying issue causing the code to prevent further damage or malfunctions.
You may notice a change in the vehicle's performance or experience specific warning signs or indicators accompanying the B1428 code. It is crucial to consult a professional for proper diagnosis and repair as ignoring the code may lead to worsened performance or safety concerns.
The engine light or service engine soon warning light may also illuminate when the B1428 code is present.
What are the causes
The B1428 code can be caused by a few things, such as a faulty ignition switched power run/crank relay, an issue with the wiring harness or connectors, a poor electrical connection in the relay circuit, or a faulty Body Control Module (BCM).
To diagnose the B1428 code, you can follow these steps:
- Check the possible causes mentioned above.
- Take a close look at the wiring harness and connectors to see if there are any visible damages.
- Inspect the components for any signs of damage.
- Check for any broken, bent, pushed out, or corroded connector pins.
Some common mistakes that people make while diagnosing the B1428 code include:
- Forgetting to check the relay and its circuitry.
- Missing damaged wiring or connectors.
- Not considering the possibility of a faulty BCM.
- Failing to perform a thorough visual inspection.
What Tools are Needed to diagnose
To diagnose the B1428 code, you will need specific diagnostic tools. Here are the recommended tools and their functions:
- OBD-II Scanner: This tool retrieves the B1428 code and other diagnostic trouble codes (DTCs) from the vehicle's onboard computer system. It provides information about the specific issue causing the code.
- Digital Multimeter: This tool tests the electrical circuits and components related to the B1428 code. It measures voltage, resistance, and continuity, helping to identify any faulty wiring or components.
- Wiring Diagrams: These diagrams visually represent the electrical circuits involved in the B1428 code. They help technicians locate and trace the wiring, connectors, and components associated with the code.
- Service Manual: This manual contains detailed information about the vehicle's systems, including the Body Control Module (BCM) and the ignition switched power run/crank relay circuit. It provides step-by-step diagnostic and repair procedures for the B1428 code.
Some troubleshooting tips for diagnosing the B1428 code include visually inspecting the wiring harness and connectors, checking for damaged components, and looking for broken, bent, pushed out, or corroded connector pins. It is important to address the underlying issue causing the code to prevent further damage or malfunctions.
How to fix Step by Step
Step 1: Start by visually inspecting the related wiring harness and connectors for any damage or corrosion. Look for broken, bent, pushed out, or corroded connector pins.
Step 2: Address any issues found in the wiring harness and connectors. Repair or replace any damaged or corroded components.
Step 3: Check the ignition switched power run/crank relay and the body control module (BCM) for faults. If any faults are found, replace the faulty components.
Step 4: If the B1428 code persists, further diagnosis may be necessary. Consult a professional for proper diagnosis and repair.
Step 5: Follow any additional repair steps recommended by the professional based on the specific diagnosis.
What are the Common Diagnosis Mistakes
One common mistake when diagnosing the B1428 code is not thoroughly inspecting the ignition switched power run/crank relay and the body control module (BCM) for faults. This can result in incorrect diagnoses and ineffective repairs. To avoid these common diagnostic errors and troubleshoot the B1428 code effectively, consider the following tips:
- Make sure to thoroughly inspect the ignition switched power run/crank relay and the BCM.
- Check for any open or shorted circuits in the ignition switched power run/crank relay harness.
- Pay attention to any poor electrical connections in the ignition switched power run/crank relay circuit.
- Don't overlook the possibility of a faulty BCM as a potential cause of the B1428 code.
What is the Repair Cost
The repair cost for the B1428 code can vary depending on factors such as location, vehicle make and model, engine type, and specific diagnosis. Labor rates range between $75 and $150 per hour, with diagnosis time typically taking around 1.0 hour.
It is important to obtain a specific quote from a repair shop for an accurate cost. Common mistakes during diagnosis can lead to incorrect diagnoses and additional expenses.
Can I drive safely with this code?
No, it is not safe to continue driving with the B1428 code. This code indicates a potential issue with the ignition switched power run/crank relay circuit.
Ignoring the code can lead to worsened performance and safety concerns. It is recommended to have a professional diagnose and repair the underlying issue causing the code.
Visually inspecting the wiring harness and connectors for damage is a good starting point.
Conclusion
In conclusion, the B1428 code indicates a potential issue with the ignition switched power run/crank relay circuit. Ignoring this code can lead to worsened performance or safety concerns, so it is important to address the underlying issue promptly.
By understanding the potential causes and symptoms, as well as using the necessary tools and following the step-by-step repair process, you can diagnose and fix the problem.
Consulting a professional may be recommended for a proper diagnosis and repair.