DTC 113: IAT voltage high ( please help )

[Freeman1982]

I was on the lake yesterday and the boat was running normally and after 10 minutes on the water the water the engine stop running, I tried to get it going never worked, I backed home and checked the fuel pump I have 55 PSI then I checked the spark from the coil. Then I Looked to the code errors I found this code
DTC 113: IAT voltage high. Please help me . I checked online it showing bad intake sensor. Is that could cause this issue ? And where is located ? I have Volvo penta engine. Please see pictures.

 

[alldodge]

The DTC 113 is set anytime the IAT voltage is above 4.95V and will display on the scanner 110*F
The IAT is a 2 wire sensor and screws into the rear of the intake behind the Throttle Body (TB). Find sensor, turn key ON without starting and measure the voltage across pins (A and B). A is power and B is ground. If your meter reads a Negative voltage, swap the probes

 

[Freeman1982]

Can you please send me a picture showing where is those sensor.

 

[alldodge]

I'm not a VP guru, just using your motor to find the items. It shows at the VP website where it is
https://www.volvopenta.com

Go there and then select "engines" then start entering 5.0G ....etc until your motor shows up. Select and then find the intake

 

[Freeman1982]

Thanks a lot

 

[Freeman1982]

I'm not a VP guru, just using your motor to find the items. It shows at the VP website where it is
https://www.volvopenta.com

Go there and then select "engines" then start entering 5.0G ....etc until your motor shows up. Select and then find the intake

I'm not a VP guru, just using your motor to find the items. It shows at the VP website where it is
https://www.volvopenta.com

Go there and then select "engines" then start entering 5.0G ....etc until your motor shows up. Select and then find the intake

Sir, I checked this site but it didn’t help me to locate where the sensor at. do you have other idea how can I find it please

 

[alldodge]

No I don't, its just the one image
I have the manual but it does not show the location

Not that said, there is also a MAT/MAP Manifold, Air Temp/ Manifold Air Pressure. It has more wires and also sits behind the TB
https://www.ebay.com/itm/265509894027

 

[Freeman1982]

Hi Guys i have an issue with my boat the engine wont start and when i checked the error code it showing IAT high voltage i checked here and online they said (map or mat) sensor i ordered one and replaced it and i still have same problem the engine wont start and gave me same error IAT high voltage . please help me my engine serial number is A196003 engine model number is 50gxic-270-R . the sensor i replaced attached in the link below. please tell me what i do now ?

Google Search

 

[dubs283]

IAT = intake air temp. Without eyes on the engine or any other info at that can't say as to if your engine has a separate iat sensor or not. MAP is manifold absolute pressure, MAT is manifold air temp. My guess is there may be a sensor on or near the flame arrestor

I know it's a different manufacturer but mercury used an iat sensor mounted to the flame arrestor on some of their older tbi, mefi controlled efi engines

 

[tpenfield]

This ^^^^^

Google "Volvo-Penta IAT" . . . You probably changed the wrong sensor.

 

[alldodge]

Has this thread also about it
https://forums.iboats.com/threads/dtc-113-iat-voltage-high-please-help.758446/#post-5784207

 

[muc]

What was the part number of the new sensor you installed? The link you posted has many different MAP/MAT sensors on it. You want Volvo p/n 3859020. If you bought something cheaper then $300, save the original one. You will probably need it.

But wait, there's more!

The DTC 0113 is telling you there is an open circuit. Suggest you follow @alldodge instructions to measure voltage at the connecter but Use the #! and #2 pins. I think he might have gotten mistaken about 8.1 vs 5.0 diagrams.

Now the bad news, This DTC0113 won't shut the engine down or keep it from starting. Looks like you have at least 2 problems. If you want to troubleshoot this issue you should order the manuals from:

Manuals & handbooks | Volvo Penta US

Workshop manuals, owners manuals and service protocols for your engine. Get your manual and service protocol here.

www.volvopenta.com

Input your serial number and the manuals will be listed.
Workshop manual - EGC Diagnostics has the troubleshooting info you will need.
Workshop manual, EFI Repair has the repair replacement instruction.
and
Wiring diagram has the wiring diagrams you might need.
you might also need,
Workshop manual, Catalyst Exhaust for why your engine won't start.

A scan tool like the Rinda diacom or techmate will be a big help and might be required. That's available from here. https://www.rinda.com/

P.S. don't use a cheap volt meter for this test, they can fry the ECM

 

[Freeman1982]

What was the part number of the new sensor you installed? The link you posted has many different MAP/MAT sensors on it. You want Volvo p/n 3859020. If you bought something cheaper then $300, save the original one. You will probably need it.

But wait, there's more!

The DTC 0113 is telling you there is an open circuit. Suggest you follow @alldodge instructions to measure voltage at the connecter but Use the #! and #2 pins. I think he might have gotten mistaken about 8.1 vs 5.0 diagrams.

Now the bad news, This DTC0113 won't shut the engine down or keep it from starting. Looks like you have at least 2 problems. If you want to troubleshoot this issue you should order the manuals from:

Manuals & handbooks | Volvo Penta US

Workshop manuals, owners manuals and service protocols for your engine. Get your manual and service protocol here.

www.volvopenta.com

Input your serial number and the manuals will be listed.
Workshop manual - EGC Diagnostics has the troubleshooting info you will need.
Workshop manual, EFI Repair has the repair replacement instruction.
and
Wiring diagram has the wiring diagrams you might need.
you might also need,
Workshop manual, Catalyst Exhaust for why your engine won't start.

A scan tool like the Rinda diacom or techmate will be a big help and might be required. That's available from here. https://www.rinda.com/

P.S. don't use a cheap volt meter for this test, they can fry the ECM

That’s the part sensor I think I found out the problem, i believe the low pressure fuel pump. This is crazy I checked the high its showing 55 psi but I never checked the low pressure, and when I locked online it said if the low pressure pump is bad it’s caused engine misfire

 

[muc]

That’s the part sensor I think I found out the problem, i believe the low pressure fuel pump. This is crazy I checked the high its showing 55 psi but I never checked the low pressure, and when I locked online it said if the low pressure pump is bad it’s caused engine misfire

Your right, it is crazy that the low pressure fuel pump would cause an engine to die and not restart. Does your engine have a misfire?

Easy to test the low pressure pump.