Chrysler Error Code P1398: How to Fix It

Q: Can I drive with P1398 error code?

You should avoid driving with P1398 as it indicates severe misfiring that can damage the catalytic converter and engine. If you must drive, keep speeds low and get to a repair facility immediately.

Q: What causes P1398 in Chrysler vehicles?

P1398 is commonly caused by worn spark plugs, faulty ignition coils, clogged fuel injectors, vacuum leaks, low fuel pressure, or internal engine problems like worn rings or valves.

Q: How much does it cost to fix P1398?

Repair costs vary from $100-200 for spark plugs and coils to $1000+ for fuel system or internal engine repairs. Professional diagnosis typically costs $100-150.

Q: Will P1398 clear itself?

P1398 will not clear itself and indicates the engine computer can no longer compensate for misfires. The underlying problem must be repaired before the code will clear.

Abstract

The P1398 error code in Chrysler vehicles indicates that the misfire adaptive numerator has reached its limit, meaning the engine's computer can no longer compensate for detected misfires. This typically points to ongoing ignition or fuel system issues that need immediate attention to prevent engine damage.