P2312 Fault Code

Ignition Coil E Primary Control Circuit Low

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2312 fault code indicates a problem within the Ignition Coil E primary control circuit, specifically indicating that the voltage is lower than expected. This can lead to issues with engine performance and can prevent the engine from starting altogether.

Key Features:

• Primarily concerns the ignition system,
• Represents a low voltage condition in the specified circuit.
• Impacts engine timing and efficiency.

What are the symptoms of the P2312 code?

When the P2312 code is triggered, you may experience:

• Difficulty in starting the engine or prolonged cranking.
• Misfires or rough idle due to incomplete combustion.
• Decreased engine performance and acceleration.
• Increased fuel consumption as the engine struggles to operate efficiently.

What causes the P2312 code?

There are several potential causes for the P2312 fault code:

• Faulty ignition coil E that is unable to maintain the required voltage.
• Damaged wiring or poor connections in the ignition system.
• Malfunctioning Engine Control Module (ECM) that fails to send the correct signals.
• Short circuits or open circuits within the ignition coil circuit.

How to fix P2312?

To resolve the P2312 fault code, follow these steps:

• Inspect the ignition coil E for physical damage or wear; replace if necessary.
• Check all wiring and connectors for corrosion or disconnection; repair or replace as needed.
• Test the ECM for proper function and correct voltage output; reprogram or replace if it is faulty.
• Clear the fault code and perform a test drive to ensure that the issue does not reoccur.