P1604
Medium severityStartability / Hard-Start Malfunction (Toyota 2NR)
Quick answer
P1604 (Startability / Hard-Start Malfunction (Toyota 2NR)) means: Toyota-documented hard-start code, commonly from carbon build-up on intake valves and the combustion chamber. Decarbonise the valves/chamber; Toyota-documented on the 2NR engine. Typical Malaysia repair cost: RM200–RM800 (approximate).
Symptoms
- •Long cranking before start
- •Rough cold running
Likely causes
- •Carbon build-up on intake valves
- •Weak ignition/fuel at start
Can I drive?
Decarbonise the valves/chamber; Toyota-documented on the 2NR engine.
Estimated repair cost (Malaysia)
RM200–RM800 (approximate)
This is general information, not a diagnosis. AutoMalaya OBD helps explain your car’s actual scan data; a qualified mechanic may still need to inspect the vehicle.