P2307 Mercury Code - Ignition Coil 'C' Primary Control Circuit High
Quick Answer
The current flow, or dwell, through the primary ignition coil is controlled by the Powertrain Control Module (PCM) by providing a switched ground path through the ignition coil driver to ground. Common causes include Faulty Ignition Coil 'C', Ignition Coil 'C' harness is open or shorted, Ignition Coil 'C' 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
- P2307 Mercury indicates Ignition Coil 'C' Primary Control Circuit High.
- Common causes
- Common causes include Faulty Ignition Coil 'C', Ignition Coil 'C' harness is open or shorted, Ignition Coil 'C' 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 P2307 Mercury Description
What are the Possible Causes of the DTC P2307 Mercury?
- Faulty Ignition Coil 'C'
- Ignition Coil 'C' harness is open or shorted
- Ignition Coil 'C' circuit poor electrical connection
How to Fix the DTC P2307 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 P2307 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 P2307 Mercury Code
1. What does the OBDII code P2307 mean for a Mercury vehicle?
P2307 indicates that the powertrain control module (PCM) has detected a high voltage issue in the ignition coil 'C' primary control circuit.
2. What are the common symptoms of the P2307 code?
Symptoms may include engine misfires, rough idling, poor acceleration, reduced fuel efficiency, and the check engine light illuminating.
3. What causes the P2307 code to appear?
Common causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, a malfunctioning PCM, or corroded electrical connections.
4. How can I diagnose the P2307 code?
Start by inspecting the ignition coil 'C' and its wiring for damage or corrosion. Use a multimeter to test the circuit for proper voltage, and check the PCM for potential faults.
5. Can I still drive my Mercury if it has the P2307 code?
Driving with this code is not recommended, as it can lead to engine misfires and potential damage to the catalytic converter.
6. How do I fix the P2307 code on a Mercury?
Repairs may involve replacing the faulty ignition coil, repairing damaged wiring or connectors, cleaning corroded connections, or, in rare cases, replacing the PCM.
7. How much does it cost to repair the P2307 code?
Repair costs can vary, but replacing an ignition coil typically ranges from $150 to $300, including parts and labor, while wiring repairs may cost less.
8. Can a dirty or faulty spark plug cause the P2307 code?
No, this code specifically relates to the ignition coil's primary control circuit, not the spark plug itself. However, misfires caused by other issues could coexist.
9. What tools are needed to troubleshoot the P2307 code?
You'll need an OBDII scanner, a multimeter for voltage testing, and basic hand tools for inspecting and replacing components.
10. Does the P2307 code reset itself after repairs?
The code may not clear automatically. Use an OBDII scanner to erase the code after completing the repairs and verify that it does not return.
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