P1402 Mercury 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 Mercury 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 Mercury Description
What are the Possible Causes of the DTC P1402 Mercury?
- 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 Mercury?
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 Mercury 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 Mercury Code
1. What are the common symptoms of OBDII code P1402 in a Mercury related to EGR Metering Orifice Restricted?
The common symptoms include rough idling, engine misfires, poor acceleration, and potentially increased fuel consumption.
2. What can cause the EGR Metering Orifice to become restricted in a Mercury, triggering code P1402?
The EGR Metering Orifice can become restricted due to carbon buildup or debris accumulation, limiting the flow of exhaust gases through the EGR system.
3. How can I diagnose if the EGR Metering Orifice is restricted in my Mercury when facing code P1402?
A thorough inspection of the EGR system, including the orifice, tubes, and passages, can help identify any restrictions. Cleaning or replacing the orifice may be necessary.
4. Is it safe to continue driving a Mercury with OBDII code P1402 indicating EGR Metering Orifice Restricted?
It is not recommended to drive the vehicle with a restricted EGR Metering Orifice, as it can lead to poor engine performance and potential long-term damage to the engine components.
5. Can cleaning the EGR Metering Orifice solve the issue causing code P1402 in a Mercury?
Cleaning the EGR Metering Orifice is a common solution to address restrictions and restore proper EGR system function. However, if the orifice is severely clogged, replacement may be necessary.
6. Are there any DIY repair tips for addressing OBDII code P1402 related to EGR Metering Orifice in a Mercury?
DIY enthusiasts can attempt to clean the EGR Metering Orifice using specialized cleaning tools and solutions, following the manufacturer's recommendations. However, if unsure, it's best to consult a professional mechanic.
7. How much does it typically cost to repair OBDII code P1402 caused by a restricted EGR Metering Orifice in a Mercury?
The cost of repairing code P1402 can vary depending on the extent of the issue and whether cleaning or replacing the EGR Metering Orifice is required. It is advisable to obtain quotes from local auto repair shops.
8. Can a restricted EGR Metering Orifice in a Mercury trigger other OBDII codes besides P1402?
Yes, a restricted EGR Metering Orifice can affect the overall performance of the EGR system, potentially triggering additional OBDII codes related to EGR flow, efficiency, or performance.
9. How often should the EGR system, including the Metering Orifice, be inspected and maintained in a Mercury to prevent code P1402?
Regular maintenance schedules recommend inspecting and cleaning the EGR system, including the Metering Orifice, at specific intervals based on the vehicle's mileage and manufacturer recommendations.
10. Could a faulty EGR valve be a contributing factor to OBDII code P1402 indicating EGR Metering Orifice Restricted in a Mercury?
Yes, a faulty EGR valve can disrupt the proper functioning of the EGR system, potentially leading to restrictions in the EGR Metering Orifice and triggering code P1402. It is essential to inspect both components for proper diagnosis and repair.
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