P1402 2017 GMC Sierra Code - Exhaust Gas Recirculation Supply Circuit
Quick Answer
The P1402 code for a 2017 GMC Sierra relates to 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 2017 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 2017 GMC Sierra Description
The P1402 code for a 2017 GMC Sierra relates to the Exhaust Gas Recirculation (EGR) supply circuit. The EGR system in a vehicle is responsible for reducing emissions by recirculating a portion of the engine's exhaust gas back into the combustion chamber. This helps lower the combustion temperature, reducing the formation of harmful nitrogen oxides (NOx). The EGR supply circuit ensures that the correct amount of exhaust gas is delivered to the engine for optimal performance and emissions control.
Common Causes of P1402 2017 GMC Sierra
- Faulty EGR valve
- Clogged EGR passages
- Malfunctioning EGR solenoid
- Wiring/connectivity issues in the EGR circuit
- Carbon buildup in the EGR system
Symptoms of P1402 2017 GMC Sierra
- Reduced engine power
- Rough idling
- Hesitation during acceleration
- Increased fuel consumption
- Failed emissions test
How to Fix P1402 2017 GMC Sierra
- Begin by conducting a visual inspection of the EGR system components, looking for any signs of damage or corrosion.
- Use a diagnostic scanner to check for specific EGR-related trouble codes and perform a thorough inspection of the EGR valve, solenoid, and associated wiring.
- Clean or replace the EGR valve and solenoid if necessary, ensuring proper functionality.
- Clear the trouble codes from the vehicle's computer and perform a test drive to verify that the issue has been resolved.
- If the problem persists, further diagnosis may be needed to identify any underlying issues with the EGR system.
Cost to Fix P1402 2017 GMC Sierra
The cost of repairing a P1402 code on a 2017 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of parts for an EGR system repair can range from $100 to $500, with labor costs adding an additional $100 to $300. Overall, the total repair cost for this issue may fall between $200 and $800. However, it's important to note that labor rates and part prices can vary significantly based on location, vehicle make and model, and the specific repair shop. It's recommended to obtain quotes from multiple auto repair shops to ensure a competitive price for the repair.
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Frequently Asked Questions about P1402 2017 GMC Sierra Code
What does the OBDII code P1402 mean for a 2017 GMC Sierra?
P1402 indicates a problem with the Exhaust Gas Recirculation (EGR) supply circuit, which can affect emissions and engine performance.
What are common symptoms of the P1402 code?
Common symptoms include rough idling, poor acceleration, decreased fuel efficiency, and the check engine light being illuminated.
What can cause the P1402 code to trigger?
Causes may include a faulty EGR valve, damaged wiring or connectors in the EGR circuit, or a malfunctioning EGR control solenoid.
How can I diagnose the P1402 code?
Diagnosing the P1402 code involves checking the EGR valve operation, inspecting wiring and connectors for damage, and using a scan tool to monitor EGR system performance.
Is it safe to drive with the P1402 code?
While it may be safe to drive short distances, the vehicle may experience reduced performance and increased emissions, so it’s best to address the issue promptly.
What are some common repairs for a P1402 code?
Common repairs include replacing a faulty EGR valve, repairing or replacing damaged wiring, and clearing any carbon buildup in the EGR system.
Can a dirty EGR valve cause the P1402 code?
Yes, a dirty or clogged EGR valve can restrict exhaust flow and trigger the P1402 code, making it essential to keep the EGR system clean.
Will clearing the P1402 code fix the problem?
Clearing the code may temporarily turn off the check engine light, but it will not resolve the underlying issue causing the code to trigger.
How much does it typically cost to repair the P1402 code?
Repair costs can vary widely depending on the specific issue, ranging from $100 for minor repairs to over $500 for replacing the EGR valve or addressing complex wiring issues.
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