P1312 Code - Ignition Coil Knock Detection Cylinder 1 & 2
Quick Answer
P1312 indicates Ignition Coil Knock Detection Cylinder 1 & 2. Common causes include Faulty/Worn Out Spark Plugs, Faulty Ignition Coils, Ignition Coils 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
- P1312 indicates Ignition Coil Knock Detection Cylinder 1 & 2.
- Common causes
- Common causes include Faulty/Worn Out Spark Plugs, Faulty Ignition Coils, Ignition Coils 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.
Code P1312 Description
What are the Possible Causes of the DTC P1312?
- Faulty/Worn Out Spark Plugs
- Faulty Ignition Coils
- Ignition Coils harness is open or shorted
- Ignition Coils circuit poor electrical connection
How to Fix the DTC P1312?
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 P1312 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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Need Help with the Code?
Get the P1312 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P1312 Hyundai — Ignition Control Module Circuit 2
- P1312 Isuzu — ION Sensing Module SEC Line 2 Circuit Fault
- P1312 Saab — Ignition Coil Knock Detection Cylinder 1 & 2
- P1312 Subaru — Exhaust Temperature Sensor Malfunction
Frequently Asked Questions about P1312 Code
1. What are the common symptoms of OBDII code P1312 (Ignition Coil Knock Detection Cylinder 1 & 2)?
- Common symptoms include rough idling, engine misfires, decreased fuel efficiency, and potential engine stalling.
2. What can cause OBDII code P1312 to appear?
- The code may be triggered by faulty ignition coils, wiring issues, a damaged spark plug, or problems with the engine control module (ECM).
3. How can I diagnose the root cause of OBDII code P1312?
- To diagnose the issue, you can perform a visual inspection of the ignition system components, test the ignition coils and spark plugs, check the wiring for any damage, and use a scan tool to gather data from the ECM.
4. Is it safe to continue driving with OBDII code P1312 present?
- It is not recommended to drive with this code active, as it can lead to further engine damage and potential safety hazards. It's best to address the issue promptly.
5. Can I repair OBDII code P1312 on my own?
- Depending on your skill level, you may be able to replace the faulty ignition coils, spark plugs, or address wiring issues on your own. However, consulting a professional mechanic is advisable for accurate diagnosis and repair.
6. How much does it typically cost to repair OBDII code P1312?
- The cost of repair can vary depending on the root cause of the issue, the labor rates in your area, and the price of parts. On average, repairing this code can range from $100 to $500.
7. Are there any preventive maintenance tips to avoid OBDII code P1312 in the future?
- Regularly servicing your vehicle, including replacing spark plugs and ignition components at recommended intervals, can help prevent issues that may trigger code P1312.
8. Can damaged ignition coils cause other problems besides triggering OBDII code P1312?
- Yes, faulty ignition coils can lead to a range of issues such as engine misfires, reduced performance, increased emissions, and potential damage to the catalytic converter.
9. How long does it typically take to repair OBDII code P1312?
- The repair time can vary based on the exact cause of the code, the availability of parts, and the workload of the mechanic. In general, repairing this code may take a few hours to half a day.
10. Will resetting the OBDII system clear code P1312?
- Resetting the OBDII system may temporarily clear the code, but it will reappear if the underlying issue is not addressed. It's important to diagnose and repair the root cause of the problem.
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