P0381 2017 GMC Sierra Code - Wait To Start Indicator Control Circuit
Quick Answer
The P0381 diagnostic trouble code (DTC) for a 2017 GMC Sierra refers to the Wait To Start Indicator Control Circuit. Common causes include Faulty wiring or connectors in the wait to start indicator circuit, A defective wait to start indicator light, Malfunctioning glow plug system. 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
- P0381 2017 GMC Sierra indicates Wait To Start Indicator Control Circuit.
- Common causes
- Common causes include Faulty wiring or connectors in the wait to start indicator circuit, A defective wait to start indicator light, Malfunctioning glow plug system.
- 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 P0381 2017 GMC Sierra Description
The P0381 diagnostic trouble code (DTC) for a 2017 GMC Sierra refers to the Wait To Start Indicator Control Circuit. This code indicates an issue with the circuit that controls the wait to start indicator light on the dashboard of the vehicle. The wait to start indicator light is crucial in diesel engines as it informs the driver when the engine is ready to be started after the glow plugs have been activated to warm up the combustion chamber for easier starting.
Common Causes of P0381 2017 GMC Sierra
- Faulty wiring or connectors in the wait to start indicator circuit.
- A defective wait to start indicator light.
- Malfunctioning glow plug system.
- Issues with the PCM software or hardware.
- Corrosion or damage to the circuit components.
Symptoms of P0381 2017 GMC Sierra
- Difficulty starting the engine, especially in cold weather.
- The wait to start indicator light not illuminating when it should.
- Illumination of the check engine light on the dashboard.
- Reduced fuel efficiency due to improper glow plug operation.
- Engine misfires or rough idling.
How to Fix P0381 2017 GMC Sierra
- Use a diagnostic tool to read and clear the DTC and verify the issue.
- Inspect the wiring and connectors in the wait to start indicator circuit for any damage or corrosion.
- Test the wait to start indicator light for proper functionality and replace if necessary.
- Check the glow plug system for any faults and repair or replace components as needed.
- If the issue persists, further diagnosis of the PCM may be necessary.
Cost to Fix P0381 2017 GMC Sierra
The typical repair costs for resolving a P0381 code can vary depending on the specific cause of the issue. In general, the cost of parts for this repair could range from $50 to $200, while labor costs may range from $100 to $300. However, it's important to note that these are rough estimates, and actual costs can vary based on factors such as location, vehicle make and model, and the extent of the repairs needed. It's recommended to consult with a trusted mechanic or auto repair shop to get a more accurate estimate based on your specific situation. Keep in mind that labor rates for auto repair shops can range from $80 to $150 per hour, with rates potentially higher in metropolitan areas or at dealerships.
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Frequently Asked Questions about P0381 2017 GMC Sierra Code
1. What does the OBDII code P0381 mean on a 2017 GMC Sierra?
P0381 indicates an issue with the Wait To Start Indicator Control Circuit, which is responsible for signaling when the glow plugs are ready in diesel engines.
2. What are the symptoms of code P0381 in a 2017 GMC Sierra?
Common symptoms include the Wait To Start indicator not illuminating, hard starting in cold weather, or no noticeable performance issues in some cases.
3. What causes the P0381 code on a 2017 GMC Sierra?
Possible causes include a faulty Wait To Start indicator bulb, damaged wiring or connectors in the control circuit, a defective glow plug control module, or a malfunctioning PCM.
4. Can I drive my 2017 GMC Sierra with a P0381 code?
Yes, you can drive the vehicle with this code, but starting the engine in cold weather may become difficult, and the issue should be addressed to avoid further problems.
5. How is the P0381 code diagnosed on a 2017 GMC Sierra?
A technician will check the bulb, wiring, and connectors for damage, test the glow plug control module, and use a scan tool to monitor the Wait To Start circuit operation.
6. How do you fix the P0381 code on a 2017 GMC Sierra?
Repairs may involve replacing the Wait To Start indicator bulb, repairing damaged wiring or connectors, replacing the glow plug control module, or reprogramming the PCM if necessary.
7. Can a dead bulb cause the P0381 code in a 2017 GMC Sierra?
Yes, a burned-out Wait To Start indicator bulb is a common cause of this code and should be checked first.
8. Is the P0381 code specific to diesel engines only?
Yes, it is specific to diesel engines, as the Wait To Start indicator is related to the glow plug system used for cold starts.
9. What tools are needed to diagnose a P0381 code on a 2017 GMC Sierra?
You’ll need a scan tool, a multimeter to check voltage and continuity, and potentially a wiring diagram for the Wait To Start circuit.
10. How much does it cost to fix the P0381 code on a 2017 GMC Sierra?
The cost depends on the exact cause, but replacing a bulb or fixing wiring can cost $50-$150, while replacing the glow plug control module may cost $300-$500.
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