Chrysler Error Code P1491: How to Fix It

Q: Can I drive my Chrysler with error code P1491?

You can drive short distances at low speeds, but monitor your engine temperature gauge closely. The radiator fan may not operate properly, which can cause overheating. Get this fixed as soon as possible to avoid engine damage.

Q: What causes Chrysler P1491 error code?

P1491 is typically caused by a faulty radiator fan relay, corroded relay socket terminals, broken wiring in the fan control circuit, or a failed radiator fan motor. The most common cause is a bad relay.

Q: How much does it cost to fix P1491?

If it's just a bad relay, the part costs $10-25 and takes 10 minutes to replace. A new radiator fan motor typically costs $80-200 plus labor. Professional diagnosis and repair usually runs $150-400 depending on the root cause.

Q: Will P1491 cause my engine to overheat?

Yes, P1491 can cause overheating because your radiator fan may not turn on when needed. This is especially dangerous in stop-and-go traffic or hot weather when airflow through the radiator is limited.

Q: How do I know if my radiator fan relay is bad?

Signs of a bad radiator fan relay include the fan not turning on when the engine gets hot, the fan running constantly even when the engine is cool, or hearing clicking sounds from the relay box when the fan should activate.

Abstract

Error code P1491 in your Chrysler indicates a problem with the radiator fan control relay circuit. This means the engine control module (ECM) has detected an issue with the electrical circuit that controls your cooling fan relay, which could lead to engine overheating if not addressed promptly.