OK, guys, some of you might like this one. I recently washed my engine and suddenly these two codes came out.
P0105 and P0106
What do they mean and how I fix them?
P0105 and P0106
What do they mean and how I fix them?
mensajero
sorry dunno how to fix it but i found the code meanings from toyota nation http://www.toyotanation.com/forum/showthread.php?t=177954
P0105 Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction
P0106 Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
P0105 Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction
P0106 Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
Thank you, it was right on. It's the MAP sensor. I guess it's malfunctioning, or something as simple as a cracked hose, even out of place.
So, the Apexi was taken back to 0 (zero). :? You never know. I'll play it safe and retry again on Saturday.
So, the Apexi was taken back to 0 (zero). :? You never know. I'll play it safe and retry again on Saturday.
OK I just reset the OBC and the engine, immediately turned on. But the light is still on. Checking the ScangaugeII it's still the P0105. But the P0106 code is gone for the moment. One interesting thing. It has been raining here like for the last few days, very hard. Those kinds of drops about a foot long that will hammer your head.bell said:
Can it be the placement or the area where the MAP sensor is located?
Yes BUT what's measured is absolute pressure. If it worked like you say, then climbing up a mountain would set off a code.bell said:
I don't think the ECM has a fixed reference, it probably bases all measurements on the pressure at idle for example on that day and that hour, which gives a baseline for all other situations in that moment.
You probably just need a new MAP sensor, it doesnt have anything to do with the rain or its position
Most ECU's have a sensor (built-in) and they range that use to lean (or make richer) the mixture depending on Ambient Pressure.
I'm not using my RAV4 until Saturday. Checking the price of the MAP sensor, $160.00. BTW, I have a 3SGTE MAP sensor here, could it work? :lol:
I found this, I guess it might throw some more light to the situation and you guys diagnostics:
TOYOTA RAV 4 Mass Air Flow Sensor
Description: The Air Flow Sensor or Mass Airflow Sensor (MAF) is one of the components of an electronic fuel injection system and is found in many of modern vehicles. Most mass air flow sensors are one piece hermetically sealed units with no moving components.
Purpose: The Mass Air Flow sensor is used to measure (actually weight) the amount of air entering the engine. This measurement is used by the engine computer or ECM to calculate proper amount of fuel injected into the cylinders in order to provide optimum combustion and low emissions.
Maintenance Tips/Suggestions: TOYOTA RAV 4 Mass air flow sensor requires no regular maintenance. On mass air flow sensors with a sense wire, this wire can become contaminated with dust particles. These particles can be removed with automotive solvents that are safe for the use on mass air flow sensors. TOYOTA RAV 4 mass air flow sensors are commonly misdiagnosed. Before replacing the mass air flow sensor check for air leaks in the connecting air ducts and intake manifold. These leaks can cause similar symptoms as a malfunctioning mass air flow sensor.
Failure symptoms: Problems with Mass Air Flow sensors are common. Bad or contaminated TOYOTA RAV 4 Mass Air Flow sensor can possibly cause a wide range of various vehicle drivability problems such as stalling, especially when the engine is cold, misfiring, poor acceleration, etc. In addition, a problem with the Mass Air Flow sensor often causes the "check engine" or "service engine soon" light in the vehicle instrument panel to illuminate.
AKA: MAF, Air Flow Meter
Location: The TOYOTA RAV 4 Mass Air Flow sensor is usually installed in the intake air duct between the air filter and the throttle body mounted on the intake manifold. Some mass air flow sensors are mounted directly to the throttle body.
TOYOTA RAV 4 Mass Air Flow Sensor
Description: The Air Flow Sensor or Mass Airflow Sensor (MAF) is one of the components of an electronic fuel injection system and is found in many of modern vehicles. Most mass air flow sensors are one piece hermetically sealed units with no moving components.
Purpose: The Mass Air Flow sensor is used to measure (actually weight) the amount of air entering the engine. This measurement is used by the engine computer or ECM to calculate proper amount of fuel injected into the cylinders in order to provide optimum combustion and low emissions.
Maintenance Tips/Suggestions: TOYOTA RAV 4 Mass air flow sensor requires no regular maintenance. On mass air flow sensors with a sense wire, this wire can become contaminated with dust particles. These particles can be removed with automotive solvents that are safe for the use on mass air flow sensors. TOYOTA RAV 4 mass air flow sensors are commonly misdiagnosed. Before replacing the mass air flow sensor check for air leaks in the connecting air ducts and intake manifold. These leaks can cause similar symptoms as a malfunctioning mass air flow sensor.
Failure symptoms: Problems with Mass Air Flow sensors are common. Bad or contaminated TOYOTA RAV 4 Mass Air Flow sensor can possibly cause a wide range of various vehicle drivability problems such as stalling, especially when the engine is cold, misfiring, poor acceleration, etc. In addition, a problem with the Mass Air Flow sensor often causes the "check engine" or "service engine soon" light in the vehicle instrument panel to illuminate.
AKA: MAF, Air Flow Meter
Location: The TOYOTA RAV 4 Mass Air Flow sensor is usually installed in the intake air duct between the air filter and the throttle body mounted on the intake manifold. Some mass air flow sensors are mounted directly to the throttle body.
I also read in a Hyundi forum that I would have to get the "Timing Belt" Changed! It has 80,000 miles on it. :?
Ouch!
The PCM has internal tables that compare MAP sensor values with TP sensor values. The Manifold Absolute Pressure (MAP) sensor is a transducer that varies resistance according to changes in intake manifold pressure (vacuum). The voltage ranges from 1-1.5 volts at idle (low pressure/high vacuum) to 4-4.5 volts at wide open throttle (high pressure/low vacuum). The Throttle Position (TP) sensor is a potentiometer that varies resistance according to changes in throttle plate position. The voltage ranges from 0.4 (±0.2) volts at 0% throttle to 4.7 volts at wide open throttle. DTC P0105 sets when the two values are out of the calibrated range from the table values.
DTC PARAMETERS
DTC P0105 will set if MAP voltage or TP sensor voltage is out of range for 2 seconds when:
Engine speed is between 1600 and 4000 RPM
Engine speed change is less than 100 RPM
EGR command is steady
IAC change is less than 10 counts
A/C command is unchanged
No P0601, P0602, P1635, EGR, IAC, MAP or TP sensor DTCs have been set.
DTC P0105 diagnostic runs continuously once the above conditions have been met.
DTC P0105 is a type B DTC.
DIAGNOSTIC AIDS
This DTC will set if either MAP or TP is out of range. To distinguish which one has failed, review Failure Record information and attempt to duplicate the conditions.
Check PCM and MAP/TP sensors for corrosion in connectors.
Use Scan tool to monitor TP SENSOR as accelerator pedal is slowly depressed. The voltage should change smoothly from 0.4 volts at 0% throttle, to 4.7 volts at wide open throttle (±0.2 volts).
IMPORTANT: Inaccurate readings will occur if resistance measurements are taken on a MAP sensor. The MAP sensor contains an internal amplifier circuit that requires applied voltage to function properly.
The PCM has internal tables that compare MAP sensor values with TP sensor values. The Manifold Absolute Pressure (MAP) sensor is a transducer that varies resistance according to changes in intake manifold pressure (vacuum). The voltage ranges from 1-1.5 volts at idle (low pressure/high vacuum) to 4-4.5 volts at wide open throttle (high pressure/low vacuum). The Throttle Position (TP) sensor is a potentiometer that varies resistance according to changes in throttle plate position. The voltage ranges from 0.4 (±0.2) volts at 0% throttle to 4.7 volts at wide open throttle. DTC P0105 sets when the two values are out of the calibrated range from the table values.
DTC PARAMETERS
DTC P0105 will set if MAP voltage or TP sensor voltage is out of range for 2 seconds when:
Engine speed is between 1600 and 4000 RPM
Engine speed change is less than 100 RPM
EGR command is steady
IAC change is less than 10 counts
A/C command is unchanged
No P0601, P0602, P1635, EGR, IAC, MAP or TP sensor DTCs have been set.
DTC P0105 diagnostic runs continuously once the above conditions have been met.
DTC P0105 is a type B DTC.
DIAGNOSTIC AIDS
This DTC will set if either MAP or TP is out of range. To distinguish which one has failed, review Failure Record information and attempt to duplicate the conditions.
Check PCM and MAP/TP sensors for corrosion in connectors.
Use Scan tool to monitor TP SENSOR as accelerator pedal is slowly depressed. The voltage should change smoothly from 0.4 volts at 0% throttle, to 4.7 volts at wide open throttle (±0.2 volts).
IMPORTANT: Inaccurate readings will occur if resistance measurements are taken on a MAP sensor. The MAP sensor contains an internal amplifier circuit that requires applied voltage to function properly.
Every forum has a Search button. It always come in hand. I was doing the research and I read a lot of information and from each one I got something new. :wink: So I decided to download and print all the advice. Even though it wasn't from the same engine, company etc.
But I always thought of what I was doing BEFORE all hell broke loose. Which was washing the engine. One little detail came up, air. I checked all the hoses on the engine. Once I check everyone, and all were right, in place and ends tight. It was like running into a wall, now what? I've already decided to check the price of the MAP sensor, $106.00. But the Toyota Parts sales man told me. "Dude, check for leaks in the air system/hoses. That part is very rare that it malfunctions, I've NEVER sold one for that year." He also added, "That years was the Die Hard of the RAV4. We never have parts for them because they never break." "If the engine is warm, and you accelerate it and suddenly it bogs down, it's air." "Keep digging." I took his advice and hanged up my cellular. I turned on the engine and sure enough, I started to hear a whistle. :shock: When I lifted all the wires coming from the ignition and sure enough, their is was. The bolts that hold the Helix Power Tower Plus were all loose. I mean you could turn them with your fingers. Tomorrow after class, I'll break out the tool box and the torque wrench. End of problem.
![Image]()
But I always thought of what I was doing BEFORE all hell broke loose. Which was washing the engine. One little detail came up, air. I checked all the hoses on the engine. Once I check everyone, and all were right, in place and ends tight. It was like running into a wall, now what? I've already decided to check the price of the MAP sensor, $106.00. But the Toyota Parts sales man told me. "Dude, check for leaks in the air system/hoses. That part is very rare that it malfunctions, I've NEVER sold one for that year." He also added, "That years was the Die Hard of the RAV4. We never have parts for them because they never break." "If the engine is warm, and you accelerate it and suddenly it bogs down, it's air." "Keep digging." I took his advice and hanged up my cellular. I turned on the engine and sure enough, I started to hear a whistle. :shock: When I lifted all the wires coming from the ignition and sure enough, their is was. The bolts that hold the Helix Power Tower Plus were all loose. I mean you could turn them with your fingers. Tomorrow after class, I'll break out the tool box and the torque wrench. End of problem.
Put some lock-tite on them when you get in there, prevent it from happening again. Glad it was a cheap fix... hopefully.
All 1st gen Ravs have a Manifold Absolute Pressure Sensor, on the firewall, on the passenger side.calgaryrav4 said:
Later on, in newer generations, Toyota installed Mass Air Flow sensors, but not in our generation
THat's the MAP sensor, on the top left corner of the picture below
/forums/album_pic.php?pic_id=8516
OK, 2001SL2 is right, I have it in the same place.
Today, I cleaned the throttle body Helix Power Tower Plus block and installed new bolts with some Loctite. Also, recalibrate the Apexi and it's working even better then before. No Check Engine light, Radiator was flushed cleaned and Coolant was changed. To get ready for the heat of the summer which is just around the corner. Oil, 3 quarts of Castrol 5W-30, (yes, even though my RAV4 has 80,000 miles on it) and Toyota OEM V6 filter, with one bottle of Lucas Oil Stabilizer. Full tank of gas with Lucas Fuel Treatment. :wink: Tomorrow, a wash and a buff polish and wax like always. :thumbs_up:
Today, I cleaned the throttle body Helix Power Tower Plus block and installed new bolts with some Loctite. Also, recalibrate the Apexi and it's working even better then before. No Check Engine light, Radiator was flushed cleaned and Coolant was changed. To get ready for the heat of the summer which is just around the corner. Oil, 3 quarts of Castrol 5W-30, (yes, even though my RAV4 has 80,000 miles on it) and Toyota OEM V6 filter, with one bottle of Lucas Oil Stabilizer. Full tank of gas with Lucas Fuel Treatment. :wink: Tomorrow, a wash and a buff polish and wax like always. :thumbs_up:
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