P1402 2016 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 2016 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 2016 Chevrolet Silverado Description
What are the Possible Causes of the DTC P1402 2016 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 2016 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 2016 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 2016 Chevrolet Silverado Code
1. What does the OBDII code P1402 mean on a 2016 Chevrolet Silverado?
The P1402 code indicates an issue with the Exhaust Gas Recirculation (EGR) Supply Circuit, which may involve a malfunction in the EGR system's wiring, components, or performance.
2. What are common symptoms of the P1402 code in a 2016 Chevy Silverado?
Symptoms may include reduced engine performance, rough idling, hesitation during acceleration, increased emissions, or the Check Engine Light being illuminated.
3. What causes the P1402 code to appear on a 2016 Chevrolet Silverado?
Common causes include a faulty EGR valve, clogged EGR passages, damaged wiring or connectors, or issues with the EGR control solenoid or sensor.
4. Can the P1402 code affect fuel economy in my 2016 Silverado?
Yes, a malfunctioning EGR system may reduce fuel efficiency due to improper combustion and increased engine workload.
5. How do I diagnose the P1402 code on a 2016 Chevrolet Silverado?
Diagnosis involves using an OBDII scan tool to confirm the code, visually inspecting the EGR system components and wiring, and testing the EGR valve and related sensors.
6. What repairs can fix the P1402 code on my 2016 Silverado?
Repairs may include cleaning or replacing the EGR valve, repairing damaged wiring or connectors, unclogging EGR passages, or replacing the EGR control solenoid.
7. Is it safe to drive my 2016 Chevrolet Silverado with the P1402 code?
Driving with the P1402 code is not recommended, as it can lead to reduced engine performance, higher emissions, and potential damage to other components.
8. How much does it cost to repair the P1402 code on a 2016 Chevy Silverado?
Repair costs vary depending on the issue, but EGR valve replacement typically ranges from $150 to $400, including parts and labor.
9. Can a dirty air filter cause the P1402 code in a 2016 Silverado?
While a dirty air filter is not a direct cause, it can contribute to performance issues that may exacerbate EGR system problems.
10. Will clearing the P1402 code with a scan tool fix the issue in my 2016 Silverado?
Clearing the code will turn off the Check Engine Light temporarily, but the underlying issue must be addressed to prevent the code from returning.
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