At The Hybrid Geek, we often hear from customers concerned that any warning light means a failing hybrid battery. But many trouble codes have nothing to do with the battery itself. In this article, we explain the most common non-battery codes we encounter so you can avoid unnecessary worry or repairs.

⚠️ P3190 / P3191 / P3193 / P0A0F - Engine Performance Issues

These codes point to poor engine power or the engine failing to start. Common causes include:

• Dirty or stuck throttle body

• Worn spark plugs

• Low fuel or poor fuel quality

• Airflow issues (dirty air filter, MAF sensor problems)

Note: These codes can cause your hybrid battery to work harder, but they don’t indicate battery failure themselves. Fix the engine issue first.

⚠️ U0293 - Lost Communication with Hybrid Control Module

This code means the car's computer isn't communicating with the Hybrid Control Module. Potential reasons:

• Loose or corroded wiring

• Faulty connectors

• Control module issue (rare)

This may mimic a battery failure but often resolves with electrical repair.

⚠️ C1259 / C1310 - Brake and Stability System Codes

These codes are commonly misinterpreted. They refer to:

• C1259: Regenerative braking malfunction

• C1310: HV system fault stored during brake control

While they may appear alongside hybrid battery codes, these are brake system alerts. If you only see these codes, it’s likely a braking or sensor issue rather than a hybrid battery problem. These codes could also be related to your low voltage system powered by your 12 volt battery. If these codes appear, and the systems themselves have been diagnosed as working properly, have your mechanic review and diagnose your 12 volt battery.

📆 What Should You Do?

1. Confirm the Codes – Use a code reader or visit a parts store like AutoZone or Advance Auto.

2. Look for Hybrid Battery Codes – If you don’t see codes like P0A80 or P3011-P3024, your battery is likely fine.

3. Focus on Engine or Brake Repairs First – Fix the root issue before jumping to battery replacement.

Have questions or unsure what to do? Our team is always happy to review your trouble codes and help you take the right next step.