AutoCodes – Mercury – P0320 Mercury

P0320 Mercury Code - Ignition/Distributor Engine Speed Input Circuit Malfunction

Quick Answer

The Ignition Failure Sensor is used to check whether the spark ignition is occurred correctly or not, and it is also used to tachometer drive. Common causes include Faulty Ignition/Distributor Engine Speed Sensor, Faulty Crankshaft Position sensor, Ignition/Distributor Engine Speed Sensor harness is open or shorted. 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: P0320 Mercury indicates Ignition/Distributor Engine Speed Input Circuit Malfunction.
Common causes: Common causes include Faulty Ignition/Distributor Engine Speed Sensor, Faulty Crankshaft Position sensor, Ignition/Distributor Engine Speed Sensor harness is open or shorted.
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.

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Code Popularity 1,502

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 15, 2021

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0320 Mercury Description

The Ignition Failure Sensor is used to check whether the spark ignition is occurred correctly or not, and it is also used to tachometer drive. The sensor monitors the voltage difference between a resistance on the battery circuit for the ignition coil. When the ignition coil works properly, the electric current through the resistance is detected as voltage drop. This is confirmed for every ignition event with the crankshaft sensor and the camshaft sensor. If Engine Control Module (ECM) detects a malfunction, no ignition is possible, so the engine would not start. If there is no ignition signal for a predetermined cycle for one or two ignition coils, an ignition coil circuit failure exists.

OBDII Code P0320 Mercury - Ignition/Distributor Engine Speed Input Circuit Malfunction - AutoCodes.com — P0320 Mercury Code - Ignition/Distributor Engine Speed Input Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0320 Mercury?

Faulty Ignition/Distributor Engine Speed Sensor
Faulty Crankshaft Position sensor
Ignition/Distributor Engine Speed Sensor harness is open or shorted
Ignition/Distributor Engine Speed Sensor circuit poor electrical connection
Low battery charge
Faulty Engine Control Module (ECM)

How to Fix the DTC P0320 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 P0320 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0320 Mercury Code

1. What are the common symptoms of OBDII code P0320 in a Mercury vehicle?

- Common symptoms include engine stalling, rough idling, difficulty starting the engine, and decreased fuel efficiency.

2. What are the potential causes of the P0320 code in a Mercury?

- The code P0320 may be triggered by a faulty crankshaft position sensor, damaged wiring in the ignition/distributor engine speed input circuit, or a malfunctioning ignition module.

3. How can I diagnose the P0320 code in my Mercury?

- To diagnose the P0320 code, you can use a scan tool to read the code and perform a visual inspection of the wiring and connectors related to the crankshaft position sensor and ignition system.

4. What are some repair tips for fixing the P0320 code in a Mercury?

- Repair tips include checking and replacing the crankshaft position sensor, inspecting and repairing any damaged wiring, and ensuring proper connections in the ignition/distributor engine speed input circuit.

5. Can driving with the P0320 code in a Mercury cause further damage?

- Continuing to drive with the P0320 code may lead to more severe engine issues and potential damage, so it is recommended to address the problem promptly.

6. How much does it typically cost to repair the P0320 code in a Mercury?

- The cost of repairing the P0320 code can vary depending on the specific cause of the issue, but it may range from $150 to $400 for parts and labor.

7. Is it safe to drive my Mercury with the P0320 code illuminated?

- It is not recommended to drive your Mercury with the P0320 code illuminated, as it can lead to potential engine problems and safety issues on the road.

8. Can I reset the P0320 code in my Mercury without fixing the underlying issue?

- While you can reset the code temporarily, it will likely reappear until the underlying issue causing the P0320 code is properly diagnosed and repaired.

9. How long does it take to repair the P0320 code in a Mercury?

- The repair time for the P0320 code can vary based on the specific cause, but it may take a few hours to a full day for diagnosis and repair.

10. Can a DIY enthusiast fix the P0320 code in a Mercury?

- DIY enthusiasts with experience in automotive repair may be able to diagnose and repair the P0320 code themselves, but it is recommended to consult a professional if unsure.