P1402 2015 Chevrolet Silverado Code - Exhaust Gas Recirculation Supply Circuit
Quick Answer
The Engine Control Module (ECM) supplies the Exhaust Gas Recirculation (EGR) valve with a 5 V reference circuit, a low reference circuit, an H-bridge motor directional control circuit, and a signal circuit. Common causes include Faulty Exhaust Gas Recirculation (EGR) Valve, Exhaust Gas Recirculation Valve harness is open or shorted, Exhaust Gas Recirculation Valve 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
- P1402 2015 Chevrolet Silverado indicates Exhaust Gas Recirculation Supply Circuit.
- Common causes
- Common causes include Faulty Exhaust Gas Recirculation (EGR) Valve, Exhaust Gas Recirculation Valve harness is open or shorted, Exhaust Gas Recirculation Valve 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 P1402 2015 Chevrolet Silverado Description
What are the Possible Causes of the DTC P1402 2015 Chevrolet Silverado?
- Faulty Exhaust Gas Recirculation (EGR) Valve
- Exhaust Gas Recirculation Valve harness is open or shorted
- Exhaust Gas Recirculation Valve circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P1402 2015 Chevrolet Silverado?
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 P1402 2015 Chevrolet Silverado 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.
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Frequently Asked Questions about P1402 2015 Chevrolet Silverado Code
1. What does the OBDII code P1402 mean on a 2015 Chevrolet Silverado?
P1402 indicates an issue with the Exhaust Gas Recirculation (EGR) supply circuit, suggesting a problem with the flow or operation of the EGR system.
2. What are the common symptoms of code P1402 in a 2015 Chevrolet Silverado?
Symptoms may include reduced engine performance, poor fuel efficiency, rough idle, engine hesitation, or the Check Engine Light being illuminated.
3. What causes the P1402 code to appear on a 2015 Chevrolet Silverado?
Common causes include a malfunctioning EGR valve, clogged EGR passages, damaged EGR wiring, or a faulty EGR position sensor.
4. Can I drive my 2015 Chevrolet Silverado with the P1402 code?
While the truck may still be drivable, ignoring this code can lead to reduced performance, increased emissions, and potential damage to the engine or catalytic converter over time.
5. How do I diagnose the P1402 code on my 2015 Chevrolet Silverado?
Diagnosis typically involves visually inspecting the EGR system, checking for clogged passages, testing the EGR valve, and using a scan tool to monitor EGR sensor readings.
6. How can I fix the P1402 code on my 2015 Chevrolet Silverado?
Repairs may involve cleaning or replacing the EGR valve, repairing damaged wiring, unclogging EGR passages, or replacing a faulty EGR position sensor.
7. How much does it cost to repair the P1402 code on a 2015 Chevrolet Silverado?
Costs vary but typically range from $150 to $400, depending on whether the EGR valve or sensor needs replacement and labor costs in your area.
8. Can a dirty EGR valve cause the P1402 code on a 2015 Chevrolet Silverado?
Yes, a dirty or clogged EGR valve can restrict exhaust gas flow, leading to the P1402 code.
9. Will clearing the P1402 code fix the problem on a 2015 Chevrolet Silverado?
Clearing the code resets the Check Engine Light but doesn’t address the underlying issue, so the code is likely to return unless the problem is resolved.
10. Can a vacuum leak trigger the P1402 code on a 2015 Chevrolet Silverado?
Yes, a vacuum leak can disrupt the EGR system’s operation and potentially trigger the P1402 code.
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