2007 Honda Civic GX NGV Sedan Logo
Claude Henoud Posted on Sep 10, 2013
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Error code P1659 - 2007 Honda Civic GX NGV Sedan

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  • Honda Master 20,706 Answers
  • Posted on Nov 16, 2013
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Joined: Apr 06, 2013
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That is it, no other failures or DTC. on car.?
no driving symptoms?
as always, check all fuses!

p1659 = the electronic throttle control system (ETCS) control relay malfunction

aka a relay used in the drive by wire system

"When the voltage from the ETCS control relay is not detected for a set time after the ETCS control relay is turned on when the ignition is turned to ON (ll), or when voltage is not applied for a set time when the throttle actuator (thing that moves the butterfly valve inside throttle body based on gas pedal) is operating, a malfunction in the ETCS control relay power switch is detected and a DTC is stored."

I wouldn't worry about it if the light went away
if it comes back its most likely a failing relay

  • johnb
    johnb Apr 07, 2014

    civic lx 2007 p1659 ,they told me to replace the ecu because no ground coming from the ecu to the relay,need help plz

  • _-__-___-_
    _-__-___-_ Apr 07, 2014

    might be,.. only testing fully this circuit, can prove what is wrong.. i the ECU does not activate a good relay the ecu is bad. I rare thing. to happen. id not attempt to fix this car with out the FSM. and doing each step it states un this DTC error page. if they did, then they are correct.

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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
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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.


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