Codes P1259 and P1486, shut off while driving and will not start

Tiny
VEGASCHICK702
  • MEMBER
  • 2000 HONDA ACCORD
  • 2.3L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 130,000 MILES
My car stalled after driving for about 10-15 minutes later than won't start back up until next day. I have put new plugs, wires, thermostat, ignition module, and fuel pump. I checked all the relays and fuses, and everything is good there. It does have two codes, one is p1259 and the other one is p1486.
Sunday, June 5th, 2022 AT 1:33 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

The codes
P1259 A problem in the VTEC Oil Pressure Switch circuit or VTEC Solenoid Valve circuit.

P1486 Cooling System Malfunction.

From what you are describing it could be due to a faulty coolant temperature sensor. It is possible that the sensor is defective and sending a signal to the ECM that the engine is too hot and that is triggering the engine shut off. As it cools down it allows you to start the engine.

https://www.2carpros.com/articles/symptoms-of-a-bad-coolant-temperature-sensor

I have attached the diagram as well as the diagnostics for the codes below.

Let me know of any questions.
Thank you.
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Sunday, June 5th, 2022 AT 4:21 PM

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