P1402 Lincoln Code - EGR Metering Orifice Restricted
Quick Answer
Diagnostic trouble code (DTC) P1402 indicates a malfunction in the Engine Gas Recirculation (EGR) valve position (EVP) sensor circuit. Common causes include Faulty Engine Gas Recirculation (EGR) sensor, Faulty Engine Gas Recirculation (EGR) valve, Engine Gas Recirculation (EGR) sensor harness is open or shorted. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P1402 Lincoln indicates EGR Metering Orifice Restricted.
- Common causes
- Common causes include Faulty Engine Gas Recirculation (EGR) sensor, Faulty Engine Gas Recirculation (EGR) valve, Engine Gas Recirculation (EGR) sensor harness is open or shorted.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P1402 Lincoln Description
What are the Possible Causes of the DTC P1402 Lincoln?
- Faulty Engine Gas Recirculation (EGR) sensor
- Faulty Engine Gas Recirculation (EGR) valve
- Engine Gas Recirculation (EGR) sensor harness is open or shorted
- Engine Gas Recirculation (EGR) sensor circuit poor electrical connection
- Faulty Powertrain Control Module (PCM)
How to Fix the DTC P1402 Lincoln?
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 Lincoln 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 Lincoln Code
1. What does the OBDII code P1402 mean on a Lincoln?
P1402 indicates that the EGR (Exhaust Gas Recirculation) metering orifice is restricted, preventing proper flow of exhaust gases into the intake system.
2. What are the symptoms of a P1402 code in a Lincoln?
Common symptoms include reduced engine performance, rough idling, increased emissions, and potentially an illuminated Check Engine Light.
3. What causes the P1402 code to appear?
The code is typically caused by carbon buildup in the EGR system, a clogged EGR metering orifice, a malfunctioning EGR valve, or faulty EGR sensors.
4. How is the P1402 code diagnosed?
A mechanic will inspect the EGR system for blockages, test the EGR valve function, and use a scan tool to monitor sensor data and confirm restricted flow.
5. Can I drive my Lincoln with the P1402 code?
Driving with this code is not recommended as it can lead to reduced fuel efficiency, higher emissions, and potential damage to the engine over time.
6. How can I fix the P1402 code on my Lincoln?
The fix may involve cleaning or replacing the EGR valve, clearing carbon deposits from the EGR passages, or replacing faulty sensors.
7. How much does it cost to repair a P1402 code?
Repair costs vary but typically range from $150 to $400, depending on whether the EGR valve needs cleaning or replacement.
8. Can a clogged EGR metering orifice cause other engine issues?
Yes, a clogged orifice can cause poor combustion, reduced power, and increased engine temperatures, potentially leading to further damage.
9. How can I prevent the P1402 code from recurring?
Regular maintenance, including periodic cleaning of the EGR system and using quality fuel, can help prevent carbon buildup and blockages.
10. Does the P1402 code always point to the EGR system?
While it usually indicates an EGR issue, faulty wiring, connectors, or unrelated engine problems can occasionally trigger this code.
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