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2001 Mazda MPV Check Engine code, P0481 Fan 2 Control circuit.What does this mean?

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6ya6ya
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Posted on Jan 02, 2017

StormStrikes
  • 104 Answers

SOURCE: how do i get the trouble codes off a 1989 mazda mpv?

http://img178.imageshack.us/img178/3331/obdikx3.jpg

The above link is to a diagram of your ALDL connector, all you need is a paper clip, straighten out the paper clip and insert one end into the diagnostic test pin and one in the system ground pin (terminals A & B).

Then put the key in the ignition and turn it to the on position but DO NOT start the engine. You will then see the check engine light flash. It will initially start by flashing once, then a pause and then flash twice and it will repeat this three times. That flash sequence indicates 12, which just means the system is operating. Its the flash sequences after that that will give you the code if any are stored.

For instance if it flashes twice, then pauses, then flashes four times, thats code 24. So any flash sequence you get after the initial 12 (flash once, pause, flash twice) you need write those down. Below is a list of diagnostic codes to tell you what the codes mean.

Code 12
1 flash, pause, 2 flashes
Diagnostic: This Code will flash whenever the diagnostic terminal is grounded with the ignition switch turned on and the engine is not running.

Code 13
1 flash, pause 3 flashes
Oxygen sensor voltage stays between 0.35 and 0.55 volts for 30 seconds when the TPS signal was above 0.55 volts. The engine had been running for at least 40 seconds with an engine temperature above 110° F.

Code 14
1 flash, pause, 4 flashes
Coolant temperature sensor signal indicates a temperature of over 284° F for 4 seconds after the engine had been running for at least 10 secondsCoolant Sensor Circuit (high temperature) If the engine is experiencing overheating problems, have those fixed before continuing. Check all wiring and connectors associated with the coolant temperature sensor. Replace the Coolant temperature sensor.

Code 15
1 flash, pause, 5 flashes
Coolant Sensor Circuit (low temperature) Coolant temperature sensor signal indicates a temperature colder than -36° F for at least 4 seconds after the engine had been running for 2 seconds. See above, then check wiring connections at the ECM

Code 16
1 flash, pause, 6 flashes
Charging system voltage was either below 9 volts or above 17 volts for 10 seconds. System High Voltage If the voltage is above 17.1 volts for more than 2 seconds, the Service Engine Soon light will illuminate. Have the charging system checked.

Code 17
1 flash, pause, 7 flashes
PCM did not detect any spark reference pulses within 240 fuel control reference pulses (80 crank revolutions) while engine was running below 1200 RPM. Spark Reference Circuit.

Code 21
2 flashes, pause, 1 flash
Throttle Position Sensor, TPS voltage was above 0.8 volts for 5 seconds when engine was running and air flow was less than 15 gm/sec, or the TPS voltage was over 4.8 volts at any time.

Code 22
2 flashes, pause, 2 flashes
Throttle Position Sensor check TPS adjustment. Replace the TPS sensor. TPS voltage was under 0.2 volts for 4 seconds when the ignition was on. Check for a sticking, or mis-adjusted throttle position sensor.

Code 23
2 flashes, pause, 3 flashes
Inlet air temperature sensor signal showed an air temperature of -29° F for 4 seconds. Manifold Air Temperature. Check the MAT sensor, wiring, and connectors for a possible open circuit. replace the MAT sensor.

Code 24
2 flashes, pause, 4 flashes
Vehicle speed sensor signal showed less than 3 MPH for 2 seconds when engine speed was greater than 3000 RPM and transmission has not been in park or neutral for more than 4 seconds. Or vehicle speed goes from above 18 MPH to 0 in less than 2 seconds without applying brake. This code can only appear when the vehicle is in motion, if it appears when the car is not in motion, ignore it. Check ECM connections, any other problems should be diagnosed by a qualified mechanic.

Code 25
2 flashes, pause, 5 flashes
Inlet air temperature sensor signal showed an air temperature of over 218° F for 5 seconds when vehicle speed was greater than 35 MPH. Check the voltage between the MAT sensor and the ECM. voltage should be above 4 volts.

Code 26
2 flashes, pause, 6 flashes
Quad-Driver sense voltage shows a low voltage when battery voltage should be present, or if the sense voltage shows battery voltage when a low voltage should be present for at least 5 seconds when the engine was running. Have the car checked by a dealer.

Code 27
2 flashes, pause, 7 flashes
2nd gear switch was closed or grounded for 10 seconds when vehicle was in 4th gear, or 2nd or 4th gear switch was open when engine was first started. Gear switch Diagnosis Have the car checked by a dealer.

Code 28
2 flashes, pause, 8 flashes
3rd gear switch was closed or grounded for 10 seconds when vehicle was in 4th gear, or 3rd or 4th gear switch was open when engine was first started.

Code 29
2 flashes, pause, 9 flashes
4th gear switch was closed or grounded for 10 seconds when vehicle was in 4th gear, or 4th gear switch was open when engine was first started.

Code 31
3 flashes, pause, 1 flash
PRNDL indicates a gear other than park or neutral for 13 seconds for 3 consecutive startups when ignition was on, engine was off and vehicle speed was 0. Or the PRNDL status indicators (A, B, C, P) showed an incorrect combination of Lo and Hi for more than 10 seconds.
Check all connectors, and for a faulty switch.

Code 32
3 flashes, pause 2 flashes
EGR System Check vacuum hoses and connections for leaks and restrictions. Replace the EGR solenoid or valve.

Code 33
3 flashes, pause, 3 flashes
MAF Sensor Have the mass air flow sensor replaced.

Code 34
3 flashes, pause, 4 flashes
There was no MAF signal for over 4 seconds while engine was running. Check for loose or damaged air duct, misadjusted minimum idle speed and cacuum leaks. Inspect the MAF sensor and the electrical connections.

Code 38
3 flashes, pause, 8 flashes
The Torque Converter Clutch portion of the brake switch was open and caused the TCC to be inoperative, adjust OR replace switch.

Code 39
3 flashes, pause, 9 flashes
Torque Converter Clutch Check ECM connections, check for faulty Torque Conver Clutch solenoid.

Code 41
3 flashes, pause, 1 flash
Cam sensor signal was not received by PCM for the last 5 seconds while engine was running. Check for faulty connections, or a faulty cam sensor. Maybe also indicate a problem with the vehicle's timing chain.

Code 42
4 flashes, pause, 2 flashes
The Electronic Spark Timing (EST) signal did not change when the ECM applied bypass voltage to the ignition module. Check for faulty connections, or a faulty ignition module.

Code 43
4 flashes, pause, 3 flashes
Knock sensor signal was either above 3.5 volts or below 1.5 volts for at least 20 seconds. Check for a faulty knock sensor, or Mem-Cal.

Code 44
4 flashes, pause, 4 flashes
Oxygen sensor voltage was under 0.25 volts for up to 4 1/2 minutes of closed loop operation, lean exhaust. Check the ECM wiring connections. Check for vacuum leaks at the hoses and intake manifold gasket.

Code 45
4 flashes, pause, 5 flashes
Oxygen sensor voltage was over 0.75 volts for 2 minutes in closed loop operation with a throttle angle between 0.6 and 1.9 volts. Rich exhaust. Check the evaporative charcoal canister and its components for the presence of fuel.

Code 46
4 flashes, pause, 6 flashes
Power Steering pressure switch Check for faulty connections, or a faulty switch.

Code 48
4 flashes, pause 8 flashes
Misfire Diagnosis. Check the ignition and fuel systems.

Code 51
5 flashes, pause, 1 flash
Prom or Mem-Cal Make sure the MEM-Cal or prom is properly installed in the ECM. Replace Mem-Cal or prom.

Code 52
5 flashes, pause, 2 flashes
Cal-Pak Check the Cal-Pak to insure properation. replace the Cal-Pak.


Code 54
5 flashes, pause, 4 flashes
EGR #2 solenoid was out of range for 6 of 8 tests. 55 EGR #3 solenoid was out of range for 3 of 5 tests.

Code 55
5 flashes, pause, 5 flashes
ECM Check for faulty connections. Replace the ECM.

Code 56
5 flashes, pause, 6 flashes
Quad-driver voltage was incorrect for 5 seconds on the circuit connected to QDM "B".

Code 57
5 flashes, pause, 7 flashes
Boost control solenoid did not open bypass valve causing engine torque to be too high.

Code 63
6 flashes, pause, 3 flashes
EGR flow was incorrect. EGR solenoid did not work properly. Have vehicle serviced by a dealer.

Code 64
6 flashes, pause, 4 flashes
Same as Code 63 EGR flow was incorrect. EGR solenoid did not work properly.

Code 65
6 flashes, pause, 5 flashes
Same as Code 63.

Posted on Dec 31, 2008

  • 840 Answers

SOURCE: power windows on 2001 mazda mpv won't go up?

if you do not here the motor then its the regulator or motor that needs to be replaced/ cif you hear the motor check the control switch on the trim panle coould be just a five dollar part to replace/ Please rate my response thank you very much

Posted on Jan 31, 2009

  • 8 Answers

SOURCE: P0481; Cooling Fan 2 control circuit

should be the one on drivers side will have a light blue and black wire \s going too it

Posted on Apr 01, 2009

  • 2 Answers

SOURCE: p1652, Power Steering Pressure Switch Circuit

to cancel the check engine light disconnect the battery for 20 seconds and then reconnect it. the light should be out

Posted on May 13, 2009

  • 1986 Answers

SOURCE: I have a Mazda 2001 MPV, just had service for o2

blinking light means engine is misfiring. continuing to drive will severely damage the engine. The O2 should not be related to your engine misfiring

Posted on Nov 13, 2009

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1 Answer

Service engine Soon light on. Code P0481 on Scanner. Both fans will come on without A/C compressor on so fans are working.


It sounds like you have a control problem , The ECM or PCM energize the relay by supplying a ground or power depending on the manufacturer ! What make , year model vehicle ! P0481 Cooling Fan 2 Control Circuit Malfunction

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2003 CRYSLER 300 SM DTC # P0481 AND # P0340 ALSO # P0300...HELP


code P0481 high speed number 2 fan relay control circuit. check for faulty fan 2 relay blowed fuse. code P0340 no camshaft position sensor circuit failure.possible causes camshaft sensor has failed or crankshaft sensor failed both sensor work together to control fuel timing and ignition timing.PCM has failed many things will cause that code.check sensor wiring connector for shorts or damaged.

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1 Answer

P0481 fan 2 control circuit


code p0481 refers to the engine coolant blower motor 2-circuit malfunction=== causes--- wiring--engine coolant blower motor---ecm check fans are not seized and there is current getting to them

Jul 04, 2013 | Cars & Trucks

1 Answer

Iwwhat is 481 code on a mazda


Hi there:
DTC P0481 - Cooling Fan 2 Ctrl CKT Malfunction
The P0481 requires reprogramming the PCM at a Mazda dealership, see below TSB in THIS LINK:



DESCRIPTION
Some vehicles may exhibit DTC P0481 (Cooling fan relays malfunction) stored in the PCM.

The false DTC detection occurs when the A/C refrigerant pressure switch is ON but the cooling fan relay is turned OFF by the PCM because the coolant temperature is 108C degrees and under. The PCM stores DTC P0481 because the cooling fan is operating without PCM control command. This is due to improper PCM calibration.



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Thank you for using FixYa, have a nice day.

Jun 22, 2012 | Mazda MPV Cars & Trucks

1 Answer

Code p0481 what does it mean?


cooling fan #2 relay circuit.

Sep 05, 2011 | 2001 Mazda MPV

2 Answers

2001 suzuki esteem engine code p0481 how do i fix it


Radiator cooling fan 2, control system malfunction. Check fuses under hood & in fuse panel under dash. If all are good check for power & ground to radiator fan motors. Verify motors work by powering up with jumper wires. If they work may have bad relay. If they dont work will need to replace motor.

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1 Answer

Fault codes


P0449 - Evaporative Emission (EVAP) Vent Solenoid Control Circuit
P0481 - Cooling Fan Relay 2 Control Circuit
It is not uncommon for the canister vent solenoid to go out.More then likely this is the correction for this issue.The second problem could be addressed by verifying that the second fan is not coming on and whether or not the fan is receiving any power.Turning the a/c on normally forces the second fan to come on.If it does not a wiring diagram may be necessary to check different points for power.Would start at the relay itself to verify power is going to and through the relay. You can also swap an identical relay with the fan relay just to test if the relay itself is malfunctioning.If it works after that then you need a replacement relay for that circuit.If it still does not work you will need to find out where the power stops flowing in that circuit.

Jun 05, 2010 | 2000 Chevrolet Impala

1 Answer

Is there a part number for the fan 2 circuit


no
that code says that the cooling fan 2 circuit has a failure, when it tried to turn it on the computer did not see a voltage change thus your code. Check the cooling fan 2 relay.

Aug 15, 2009 | 2003 Chevrolet Impala

1 Answer

PO481 code Chevy IMPALA 2003


Looked it up in Chilton's, confirmed in http://www.obd-codes.com/trouble_codes/

P0481 Cooling Fan 2 Control Circuit Malfunction

Each fan will throw a different code. See 3 fans listed for your model. Here's a link for the wiring schematic: http://www.chiltonlibrary.com/content/images/WD/GM/014/WD_GM_014788.pdf


Best of luck.
Greg

May 23, 2009 | 2003 Chevrolet Impala

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