OBD-II Generic Error Code P2316: How to Fix It

Q: Can I drive with error code P2316?

It's not recommended. Driving with this code can cause misfires, catalytic converter damage, and poor fuel economy. Have it diagnosed and repaired promptly.

Q: What causes ignition coil primary circuit high voltage?

Common causes include a faulty ignition coil, shorted or open wiring in the primary circuit, poor electrical connections, or a failing PCM.

Q: How do I know which cylinder is F?

Cylinder numbering depends on engine layout. For a V6, cylinders are often 1-3-5 on one bank and 2-4-6 on the other. For a V8, 1-3-5-7 and 2-4-6-8. Consult your vehicle's service manual for exact labeling.

Q: Can a bad spark plug cause code P2316?

While unlikely, a severely fouled or shorted spark plug can cause excessive current draw, but the code specifically points to the ignition coil primary circuit. Still, inspect spark plugs if the coil is replaced.

Q: What is the cost to fix code P2316?

DIY cost ranges from $30–$100 for a new coil. Professional repair including diagnosis can be $150–$400 depending on labor rates and parts.

Abstract

Error code P2316 indicates a problem with the ignition coil for cylinder F (typically cylinder 6 or 8 depending on engine). The powertrain control module (PCM) has detected high voltage in the primary circuit of that ignition coil, often due to a faulty coil, wiring issue, or PCM problem. This can cause misfires, rough running, and increased emissions.