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Where is the iat sensor on a 2006 4.2L trailblazer

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Posted on Sep 04, 2008

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How do I fix a 2005 Chevy Trailblazer code PO113


Intake Air Temperature Circuit High Input

A code P0113 may mean that one or more of the following has happened:
Internally failed IAT sensor Faulty connection at IAT sensor
Open in IAT ground circuit or signal circuit
Short to voltage in IAT signal circuit or reference circuit IAT harness and/or wiring routed too close to high-voltage wiring (e.g. alternator, spark plug cables, etc.)
Faulty PCM (less likely but not impossible)

Oct 20, 2015 | Cars & Trucks

1 Answer

2004 trailblazer code po128


P0128:
P0128 OBD-II Trouble Code
Technical DescriptionCoolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)

What does that mean?This means that the engine's PCM detected that the engine has not reached the required temperature level within a specified amount of time after starting the engine. The intent of the P0128 code is to indicate a faulty thermostat. Similar codes: P0125

In determining the engine did not reach a "normal" temperature, it takes into account the length of time the vehicle has been running, the intake air temperature (IAT) sensor reading, the engine coolant temperature (ECT) sensor reading, and the speed of the vehicle.

CausesA code P0128 may mean that one or more of the following has happened:

Low engine coolant level .
Leaking or stuck open thermostat .
Faulty cooling fan (running too much) .
Faulty coolant temperature (ECT) sensor.
Faulty intake air temperature (IAT) sensor .Here's a link on replacing your thermostat.

Feb 06, 2013 | 2004 Chevrolet TrailBlazer

1 Answer

Which are the functional iat sensor wires on an accordd 2008


It all depends on which engine your Accord is equipped with. This is really nice-to-know information when you are asking somebody for help with your engine control circuits.

For the 2.4L engine: At the MAF/IAT sensor connector, Pin #4, GREEN/BLACK is the "sensor ground" and Pin #5, RED/YELLOW is the "sensor input" for the IAT.

For the 3.5L engine: At the MAF/IAT sensor connector, Pin #1 GREEN/YELLOW is the "sensor ground" and Pin #2 RED/YELLOW is the "sensor input" for the IAT.

Oct 04, 2011 | 2008 Honda Accord

1 Answer

How do i replace the intake air temperature sensor on a 2005 chevy trailblazer


The Intake Air Temperature Sensor (IAT) is located in the intake duct near the air cleaner assembly on the right side of the engine compartment. To replace it, you would simply disconnect the electrical connector and pull the sensor out of the rubber duct. The new one simply pushes in. Before going out and buying a new one, make sure that the sensor is plugged in if you are getting a code for it. These get accidentally left unplugged all the time when people remove the duct to perform air cleaner service. Also make sure the wires are not damaged. IAT Sensor failures are rare.

Apr 02, 2011 | 2005 Chevrolet TrailBlazer

1 Answer

Can't find it IAT sensor 2005 dodge diesal 3500


Click the link below.It has location of IAT sensor and the instructions to remove and install iat sensor.------ http://technoanswers.blogspot.com/2011/03/where-is-iat-sensor-located-on-dodge.html ----------------------- This should help.Thanks.Helpmech.

Mar 21, 2011 | Dodge Pickup Cars & Trucks

2 Answers

P0113


P0113 - Intake Air Temperature Circuit High Input

What does that mean?
The powertrain control module (PCM) monitors the temperature of the air entering the engine. The PCM supplies a 5 volt reference voltage to the Intake Air Temperature (IAT) sensor. The IAT is a thermistor that varies resistance based on temperature. As the temperature increases, resistance decreases. Low temperature results in a high signal voltage. When the PCM sees a signal voltage higher than 5 volts, it sets this P0113 check engine light code.

Potential Symptoms
There will likely be no symptoms other than illumination of the Malfunction Indicator Lamp (MIL - Check Engine Light / Service Engine Soon).

Causes
A code P0113 may mean that one or more of the following has happened:
* Internally failed IAT sensor
* Faulty connection at IAT sensor
* Open in IAT ground circuit or signal circuit
* Short to voltage in IAT signal circuit or reference circuit
* IAT harness and/or wiring routed too close to high-voltage wiring (e.g. alternator, spark plug cables, etc.)
* Faulty PCM (less likely but not impossible)

Possible Solutions
First, if you have access to a scan tool, is there an IAT reading? If the IAT reading is logical then the problem is likely intermittent. If the reading is less than -30 degrees, unplug the connector. Install a jumper wire between the harness connector signal and ground circuits. The IAT temperature reading on the scan tool should be maxed out at the high end. For example it should be 280 degrees Farenheit or higher. If it is, the wiring is okay, and it may have been the connection. If it isn't install the jumper wire between the IAT signal circuit and the chassis ground. If now the IAT reading on the scan tool is maxed out then check for an open in the IAT ground circuit. If you get no reading at all on the scan tool, it's likely that the sensor signal is open or the 5 volt reference is missing. Check using a DVOM (digital volt ohm meter) for a 5 volt reference. If it's there, then unplug the connector at the PCM and check for continuity on the IAT signal circuit between the PCM connector and the IAT connector.

Hope this help (remember rated this).

Jun 10, 2010 | 1997 Chevrolet Camaro

1 Answer

I have serv eng light on with code # PO172 , PO128 , and PO442 , and I replaced fuel tank cap today , light still on ,and I need to get inspection , but I am out of work and can't afford expensive repair...


Code p0172 is MAF, vacuum leak, and fuel pressure.
You can see my TIPS on this site to help with the MAF.
Code p0128 is Low ccolant, ECT or the IAT.
code p0442 is your EVAP system.
Please let me know what you find.

Feb 12, 2010 | 2003 Chevrolet TrailBlazer

1 Answer

IAT sensor on 1997 cadillac el dorado


  • P0110 - Intake Air Temperature (IAT) Sensor Circuit
  • P0111 - Intake Air Temperature (IAT) Sensor Performance
  • P0112 - Intake Air Temperature (IAT) Sensor Circuit Low Voltage
  • P0113 - Intake Air Temperature (IAT) Sensor Circuit High Voltage
  • P0114 - Intake Air Temperature Circuit Intermittent ,hope this helps you
  • Jun 14, 2008 | 1997 Cadillac Eldorado

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