P2331 OBD-II: Ignition Coil "K" Primary Control Circuit High
P2331 Severity
Should you fix P2331 yourself?
Identifying an OBD code is just the start of a complete diagnostic routine. Most trouble codes are caused by a sensor reporting a value that is out of range. Just replacing a sensor may not fix underlying issues. Be sure to understand the code, the part or system in your car that the code refers to, and the risks of delaying professional repair.
Proper diagnosis will save you time and money on unnecessary repairs.
Urgent codes indicate immediate action is necessary. These are urgent and significant malfunctions that can cause severe damage to the vehicle or harm the driver and passengers.
What causes OBD-II fault code P2331?
The ignition coil or coils are responsible for igniting the air/fuel mixture inside the combustion chambers. Without reliable performance from the ignition coil(s) the vehicle will stumble and misfire. The engine control module (PCM) has special transistors called "drivers" to turn the Ignition Coil(s) on an off. If the PCM cannot control the Ignition Coil, it will set code P2331.
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OBD II Fault Code
- OBD II P2331
OBD-II Code Decreased engine performance is defined as a Ignition Coil "K" Primary Control Circuit High
The ignition coil or coils are responsible for igniting the air/fuel mixture inside the combustion chambers. Without reliable performance from the ignition coil(s) the vehicle will stumble and misfire. The engine control module (PCM) has special transistors called "drivers" to turn the Ignition Coil(s) on an off. If the PCM cannot control the Ignition Coil, it will set code P2331.
Decreased engine performance Symptoms
- Decreased engine performance
- Increased fuel consumption
Common Problems That Trigger the P2331 Code
- Ignition coil failure
- Powertrain Control Module (PCM) failure
- Wiring issue
Common Repairs Needed for the P2331 Code
Ask our experts about P2331.
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