Question about 2005 Honda Odyssey

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Code p1659 OBD !! Scanner code, engine a little rough on idle and acceleration

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  • Honda Master
  • 20,706 Answers

Ok , you scanned or Autozoned it, if latter?, fail you do.
did they write it down wrong?
the code must be told accurately, (im sure you know that)

this code needs honda only meanings, P1
Electronic Throttle Control System Control Relay Off Malfunction
blown 7.5a fuse #15?
baring a simple fuse.
read the FSM./
the FSM covers this code, what to do and to find which part is
bad , not guessing, the ECU cant tell you what part is bad or dirty.
it only tells you what tests failed.
read the FSM or take the car to any ASE certified Mechanic.
this car is Throttle by wire. technology. (a pain , the TSB proves it.)

ever heard of a TSB? all good mech read them first
here is one example, on topic. too.
quote: (look up you car, and YOUR TSBs, read them all)
http://autoproimportrepair.com/Honda_TSB.htm


MIL Comes On With DTC P1659 TSB 05-008
SYMPTOM
In cold temperatures, the MIL comes on with DTC P1659 (electronic throttle control system control relay OFF malfunction). PROBABLE CAUSE Moisture inside the throttle control relay may freeze. This would cause the relay to fail, storing DIG P1659 along with any of these DTCs: P0135: Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Circuit Malfunction, P0141: Rear Secondary Heated Oxygen Sensor (Secondary HO2S, Bank 1, Sensor 2) Heater Circuit Malfunction, P0155: Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Heater Circuit Malfunction, P0161: Front Secondary Heated Oxygen Sensor (Secondary H025, Bank 2, Sensor 2) Heater Circuit Malfunction, P0498: Evaporative Emission (EVAP) Canister Vent Shut Valve Control Circuit Low Voltage. CORRECTIVE ACTION Replace the electronic throttle control relay, the air/fuel sensor relay, and the starter cut relay.


Posted on Nov 20, 2013

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Posted on Jan 02, 2017

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  • 54 Answers

SOURCE: rough idle

It sounds like one of your plug wires is arching in the head. Those plug wires go down into the head, through the valve cover and those seals around the valve cover in the top are notorious for leaking. They then get oil on the wires and cause them to arc, causing a miss under a load. Or if its not leaking oil on them you still just may have a bad wire. Good luck.

Posted on May 31, 2009

pappapumpdaf
  • 635 Answers

SOURCE: blowing white smoke when reved up.... boggs a

White smoke is usually caused by a cracked head gasket or cracked head, but some times it is caused by your brake booster sucking brake fluid into the intake through the vacuum hose. If your brakes are constantly going soft, or your brake reservoir constantly needs refilling then that will be your problem. Replacement will include both the brake booster and the master cylinder.

If the cause is a leaking head, you can fix it with sodium silicate (liquid Glass) which can be purchased in most pharmacies. You will need to remove your thermostat to keep it from sticking shut before doing this. Replace it after the smoke is gone.

Remember that the sodium silicate trick is more of a bandaid than a permanent fix. Also remember that sodium silicate is not a good fix for steel heads, and since yours is aluminum it should work.

BUT since your problem only occurs as you accelerate, I would suspect the brake booster and master cylinder.

Posted on Apr 08, 2010

  • 514 Answers

SOURCE: When engine gets hot, idle is up and down with the

per this address "http://www.obd-codes.com/trouble_codes/" p0505 is a "IAC (Idle Air Control) System Malfunction" it gives some good suggestions to look at to find a solution for your problem.

Posted on Dec 14, 2010

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