P1402 2017 Chevrolet Silverado Code - Exhaust Gas Recirculation Supply Circuit
Quick Answer
The P1402 code on a 2017 Chevrolet Silverado indicates a problem with the Exhaust Gas Recirculation (EGR) supply circuit. Common causes include Faulty EGR valve, Clogged EGR passages, Wiring issues in the EGR circuit. 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 Chevrolet Silverado indicates Exhaust Gas Recirculation Supply Circuit.
- Common causes
- Common causes include Faulty EGR valve, Clogged EGR passages, Wiring issues in the EGR circuit.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1402 2017 Chevrolet Silverado Description
The P1402 code on a 2017 Chevrolet Silverado indicates a problem with the Exhaust Gas Recirculation (EGR) supply circuit. The EGR system is responsible for reducing nitrogen oxide emissions by recirculating a portion of the engine's exhaust gases back into the intake manifold. This helps lower combustion temperatures and reduces the formation of harmful emissions.
Common Causes of P1402 2017 Chevrolet Silverado
- Faulty EGR valve
- Clogged EGR passages
- Wiring issues in the EGR circuit
- Vacuum leaks in the EGR system
- Carbon buildup in the EGR valve
Symptoms of P1402 2017 Chevrolet Silverado
- Check Engine Light illuminated
- Reduced engine performance
- Increased emissions
- Rough idling
- Engine knocking
How to Fix P1402 2017 Chevrolet Silverado
- Begin by conducting a visual inspection of the EGR valve and associated components to check for any visible damage or blockages.
- Use a diagnostic scan tool to retrieve the specific trouble codes and data related to the EGR system.
- Test the EGR valve's functionality by applying vacuum and checking for proper operation.
- Clean or replace the EGR valve if necessary, ensuring that all passages are clear of debris.
- Verify proper operation of the EGR system after repairs are completed.
Cost to Fix P1402 2017 Chevrolet Silverado
The cost of repairing a P1402 code on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, replacing a faulty EGR valve can cost between $150 and $300, while cleaning the EGR system may cost around $100 to $200. Labor costs typically range from $80 to $150 per hour, with the total repair bill potentially amounting to $300 to $600. It is recommended to consult with a qualified mechanic to obtain an accurate estimate based on the vehicle's condition and location.
Need more information about the P1402 2017 Chevrolet Silverado code?
Need more information on how to fix the P1402 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1402 2017 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1402 2017 Chevrolet Silverado Code
1. What does the OBDII code P1402 mean on a 2017 Chevrolet Silverado?
P1402 indicates an issue with the Exhaust Gas Recirculation (EGR) supply circuit, which controls the flow of exhaust gases back into the engine for emissions reduction.
2. What are the common symptoms of code P1402 in a 2017 Chevrolet Silverado?
Symptoms may include a check engine light, rough idling, reduced fuel efficiency, engine hesitation, or increased emissions.
3. What causes the P1402 code to appear on a 2017 Chevrolet Silverado?
Common causes include a malfunctioning EGR valve, clogged EGR passages, damaged wiring or connectors, or a faulty EGR position sensor.
4. Can driving with code P1402 damage my 2017 Chevrolet Silverado?
Driving with P1402 for an extended period can lead to poor engine performance and increased emissions but is unlikely to cause immediate severe damage.
5. How can I diagnose the P1402 code on my 2017 Chevrolet Silverado?
Use an OBDII scanner to confirm the code, then inspect the EGR valve, wiring, and connectors. Check for carbon buildup in the EGR passages and verify proper operation of the EGR system.
6. How do I fix the P1402 code on a 2017 Chevrolet Silverado?
Repairs may involve cleaning or replacing the EGR valve, repairing damaged wiring, clearing carbon buildup in the system, or replacing a faulty EGR position sensor.
7. How much does it cost to fix the P1402 code on a 2017 Chevrolet Silverado?
Costs can vary widely. Cleaning the EGR valve may cost $100-$200, while replacing the valve or sensor can range from $200 to $500, including labor.
8. Can a clogged EGR valve cause the P1402 code on my 2017 Chevrolet Silverado?
Yes, a clogged EGR valve can restrict exhaust gas flow and trigger the P1402 code by disrupting the EGR supply circuit.
9. Can I clear the P1402 code without fixing the issue on my 2017 Chevrolet Silverado?
Clearing the code without addressing the underlying issue may result in the code returning and could lead to worsening performance or emissions problems.
10. Is the P1402 code related to emissions testing for my 2017 Chevrolet Silverado?
Yes, the P1402 code can cause your Silverado to fail an emissions test due to improper exhaust gas recirculation and increased pollutant output.
Discuss the causes and fixes for P1402 2017 Chevrolet Silverado OBDII Code
Code P1402 2017 Chevrolet Silverado comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.