P1402 2015 GMC Sierra Code - Exhaust Gas Recirculation Supply Circuit
Quick Answer
The P1402 code on a 2015 GMC Sierra indicates a problem with the Exhaust Gas Recirculation (EGR) supply circuit. Common causes include Faulty EGR valve, Clogged EGR passages, Malfunctioning EGR solenoid. 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
- P1402 2015 GMC Sierra indicates Exhaust Gas Recirculation Supply Circuit.
- Common causes
- Common causes include Faulty EGR valve, Clogged EGR passages, Malfunctioning EGR solenoid.
- 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 P1402 2015 GMC Sierra Description
The P1402 code on a 2015 GMC Sierra indicates a problem with the Exhaust Gas Recirculation (EGR) supply circuit. The EGR system is responsible for recirculating a portion of the engine's exhaust gases back into the intake manifold to reduce emissions and control combustion temperatures. The EGR supply circuit ensures that the correct amount of exhaust gas is being supplied to the EGR valve.
Common Causes of P1402 2015 GMC Sierra
- Faulty EGR valve
- Clogged EGR passages
- Malfunctioning EGR solenoid
- Wiring issues
- EGR sensor problem
Symptoms of P1402 2015 GMC Sierra
- Decreased fuel efficiency
- Rough idling
- Engine misfires
- Stalling
- Illumination of the Check Engine Light
How to Fix P1402 2015 GMC Sierra
- Begin by conducting a thorough inspection of the EGR system to identify any visible damage or clogs.
- Test the EGR valve, solenoid, and sensor using a multimeter to check for proper functionality.
- Clean or replace any clogged EGR passages to ensure proper flow of exhaust gases.
- Repair or replace any damaged wiring or connectors in the EGR supply circuit.
- Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1402 2015 GMC Sierra
The cost of repairing a P1402 code on a 2015 GMC Sierra can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay between $200 and $500 for parts and labor. Keep in mind that rates at auto repair shops can vary, so it's advisable to obtain quotes from multiple sources to ensure you get the best price. Additionally, factors such as the location, vehicle make and model, and engine type can influence the overall repair costs.
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Frequently Asked Questions about P1402 2015 GMC Sierra Code
What does the OBDII code P1402 mean for a 2015 GMC Sierra?
P1402 indicates a problem with the Exhaust Gas Recirculation (EGR) supply circuit, which may affect the vehicle's emissions and performance.
What are the common symptoms of the P1402 code?
Common symptoms include reduced engine performance, increased fuel consumption, rough idling, and the illumination of the check engine light.
What could cause the P1402 code to trigger?
Possible causes include a faulty EGR valve, damaged wiring or connectors in the EGR circuit, a clogged EGR passage, or a malfunctioning engine control module (ECM).
How can I diagnose the P1402 code?
To diagnose the P1402 code, check for other related codes, inspect the EGR valve and its connections for damage, test the EGR valve operation, and examine the wiring for continuity and shorts.
What are some repair tips for fixing the P1402 code?
Repair tips include cleaning or replacing the EGR valve, repairing any damaged wiring or connectors, clearing any carbon buildup in the EGR passages, and ensuring the ECM is functioning properly.
Can I drive my GMC Sierra with the P1402 code?
While it may be possible to drive the vehicle, it is not recommended as it could lead to performance issues and increased emissions until the problem is resolved.
Is the P1402 code serious?
Yes, the P1402 code can indicate an issue that may affect engine performance and emissions, so it should be addressed promptly to avoid further complications.
Will clearing the code P1402 fix the problem?
Clearing the code will not fix the underlying issue; it may temporarily turn off the check engine light, but the code will likely reappear if the root cause is not addressed.
What is the estimated cost to repair the P1402 code?
Repair costs can vary widely, but they may range from $100 to $600, depending on whether the EGR valve needs cleaning, replacement, or if there are wiring issues to fix.
Can I prevent the P1402 code from occurring?
Regular maintenance, including cleaning the EGR system and ensuring that the engine is running efficiently, can help prevent issues related to the P1402 code from occurring.
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