P1486

Took the car to the dealership for some routine stuff today. They said I was throwing a code p1486 (cooling system malfunction). They reset it and told me if it comes back on then I have to replace the PCM. The quote for the pcm was 1300 dollars!!!! if the code comes back on, is this something I can easily fix by myself or have my cousin who is a mechanic do easily? how much does a pcm cost without the labor? help please guys...

To replace the ecu is really easy, but then you have to re-program the key after wards.

And if you do need an ecu, you can definitely find it cheaper than $1300 if you do a bit of searching around.

Drift said:

To replace the ecu is really easy, but then you have to re-program the key after wards.

And if you do need an ecu, you can definitely find it cheaper than $1300 if you do a bit of searching around.

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sure its the ecu??? they referred to it as the PCM. A cooling system module or something...

There is nothing else on the car worth $1300 to replace besides the motor/trans.

well that was a quote with labor so... i got my buddy who worked for honda checkin on a price then we can do the labor for free

pcm = power control module aka the ecu.. they told me i needed to replace my pcm for throwing a pcm malfunction, an then said i needed to pay XX amount to reprogram the keys, then i told them my car was 6spd they told me to go **** myself.. honda sucks.. you have to find a good personal mechanic... and im sure there is something else that could be causing that code other then a pcm malfunction

DTC P0128/P1486: Cooling System Malfunction

NOTE: If the DTCs listed below are stored at the same time as DTC P0128/P1486, troubleshoot those DTCs first, then recheck for P0128/P1486.

P0107, P0108, P1128, P1129: MAP Sensor
P1106, P1107, P1108: Barometric Pressure Circuit
P1253, P1257, P1258, P1259: VTEC System (F23A1, F23A5 engine)
P0401: EGR Flow Insufficient
P1491: EGR Valve Lift Insufficient
P1498: EGR Valve Position Sensor High Voltage
P0116, P0117, P0118: Engine Coolant Temperature Circuit
P0112, P0113: Intake Air Temperature Circuit
P0500: Vehicle Speed Sensor
P0335, P0336, P1359: Crankshaft Position Sensor
P0300, P1399: Random Misfire
P0301, P0302, P0303, P0304: Cylinder 1,2,3, or 4 Misfire Detected.
P0505: Idle Control System Malfunction
P1519: Idle Air Control Valve

DTC P0128/P1486 can set occasionally when the hood is opened.

_____________________________________________________________

Check the engine coolant level. Is the engine coolant level low?

YES - Refill the engine coolant. If necessary, check the cooling system.
NO - Go to step 2.

Turn the ignition switch ON (II), and make sure the A/C is off.
Check the radiator fan. Does the radiator fan keep running?

YES - Check the radiator fan circuit with A/C model or without A/C model, radiator fan switch circuit, and the radiator fan switch. If the circuits and the switch are OK, substitute a known-good ECM/PCM and recheck. If the symptom/indication goes away, replace the original ECM/PCM.
NO - Test the thermostat.

Great info Finch! (as usual)

And by simply searching p1486, I found these.

P1486 — Thermostat Range/Performance Problem

http://www.6thgenaccord.com/forums/showthread.php?t=12572&highlight=p1486

http://www.6thgenaccord.com/forums/showthread.php?t=1795&highlight=p1486

http://www.6thgenaccord.com/forums/showthread.php?t=4001&highlight=p1486

fastflyinaccord said:

Took the car to the dealership for some routine stuff today. They said I was throwing a code p1486...

Click to expand...

Just curious since you didn't mention it - was your CEL on before you brought it in?

I bet the light was on, but there are some DTCs out there that will get stored in the PCM but not light up the CEL.