B1555 Code - Ignition Run/Start Circuit Failure
Quick Answer
The Body Control Module (BCM) monitors the Ignition Switch. Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition Switch 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
- B1555 indicates Ignition Run/Start Circuit Failure.
- Common causes
- Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition Switch 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.
Code B1555 Description
What are the Possible Causes of the DTC B1555?
- Faulty Ignition Switch
- Ignition Switch harness is open or shorted
- Ignition Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B1555?
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 B1555 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 B1555 code?
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Need Help with the Code?
Get the B1555 code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B1555 Code
1. What are common symptoms of OBDII code B1555 (Ignition Run/Start Circuit Failure)?
- Common symptoms include difficulty starting the vehicle, engine stalling, and the ignition system not engaging properly.
2. What are the possible causes of OBDII code B1555?
- Causes of this code can include a faulty ignition switch, damaged wiring in the ignition circuit, or a malfunctioning ignition control module.
3. How can I diagnose the issue related to OBDII code B1555?
- To diagnose this issue, you can use a scan tool to read the code, check the ignition switch for proper functionality, and inspect the wiring for any visible damage or corrosion.
4. Can a DIY enthusiast repair OBDII code B1555 at home?
- Depending on the exact cause, some DIY enthusiasts may be able to repair this code at home by replacing the faulty ignition switch, repairing damaged wiring, or addressing other related issues.
5. Is it safe to drive with OBDII code B1555 present?
- It is not recommended to drive with this code present, as it can lead to unexpected stalling or starting issues while on the road, posing a safety risk.
6. How much does it typically cost to repair OBDII code B1555?
- The cost of repairing this code can vary depending on the specific cause and the labor rates in your area, but it may range from $100 to $300 or more at a repair shop.
7. Can a faulty battery cause OBDII code B1555 to appear?
- While a faulty battery can potentially cause electrical issues, OBDII code B1555 specifically relates to problems in the ignition run/start circuit and is more likely due to issues with the ignition system components.
8. Will disconnecting the battery reset OBDII code B1555?
- Disconnecting the battery may temporarily clear the code, but it will likely reappear if the underlying issue causing the Ignition Run/Start Circuit Failure is not addressed and resolved.
9. Are there any preventive measures to avoid encountering OBDII code B1555 in the future?
- To prevent OBDII code B1555, it's essential to perform regular maintenance on your vehicle, address any ignition system issues promptly, and avoid overloading the electrical system with aftermarket accessories.
10. Can OBDII code B1555 be intermittent or sporadic?
- Yes, this code can sometimes be intermittent or sporadic, especially if the underlying issue is related to loose wiring connections or occasional failures in the ignition circuit.
Discuss the causes and fixes for B1555 OBDII Code
-
I've got a 2009 half 2 56.4 with code B1555 Something to do with the Ignition I'm wondering since I have 2 of these trucks can I just pull the Ignition in the key out of the other truck and put it in the truck I'm working on or do I have to do a bunch of programming and also wondering if the smart Junction Box has to be programmed to the computer Truck will not crank will not start from wire underhood inspire underhood I've been through the whole truck every Wire the security light comes on for a little bit then goes off but the domelight stays blinking Any ideas would be helpful thanks
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What model is your vehicle? most vehicle requires reprogramming the new keys to the vehicle when the keys are change, even if the keys come from the same model vehicle.
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