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What causes trouble code 113, 138 and I believe 158 to appear frequently and how to fix it ? Is it faulty IAT sensor ? Thank you, Waldemar

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  • Jaguar Master
  • 14,036 Answers

Let me get back to you.had to step out short while.

Posted on Aug 03, 2010

  • Jonah Oneal Aug 03, 2010

    CODE PO113 IAT SENSOR IN PUT TOO HIGH./ CODE PO138 RIGHT REAR HO2S CIRCUIT VOLTAGE HIGH./ CODE PO158 LEFT REAR HO2S CIRCUIT VOLTAGE HIGH. I WOULD REPLACE IAT SENSOR SENSOR BECAUSE IF FAULTY IT WOULD SET OFF THE HO2S SENSORS. WHICH WILL CAUSE RICH EXHAUST EMISSIONS.

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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

3 Answers

Engine code p110


P0303 Code - Cylinder #3 Misfire
P0110 DTC - IAT Circuit Malfunction
P2195 O2 Sensor Signal Biased/Stuck Lean (Bank 1 Sensor 1) Code
Potential causes of a P2195 code include:
p2195
p219521
  • Oxygen (O2) or A/F ratio sensor or sensor heater malfunction
  • Open or short in O2 sensor circuit (wiring, harness)
  • Fuel pressure or fuel injector problem
  • Faulty PCM
  • Intake air or engine vacuum leaks
  • Faulty fuel injector(s)
  • Fuel pressure too high or too low
  • PCV system leak/fault
  • A/F sensor relay faulty
  • MAF sensor malfunction
  • ECT sensor malfunction
  • Fuel pressure too low
  • Fuel leak
  • Air suction in air intake system
  • A code P0303 may mean that one or more of the following has happened:
  • Faulty spark plug or wire
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuel injector
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Running out of fuel
  • Poor compression
  • Defective computer
  • Potential causes of the P0110 DTC include:

  • po110
    • IAT sensor shifted out of airflow
    • Bad IAT sensor
    • Shorted to ground or open on signal circuit to IAT
    • Open in ground circuit to IAT
    • Poor connection at IAT (backed out terminals, broken connector locks, etc.)
    • Bad PCM

Sep 25, 2014 | 2003 Ford Focus

1 Answer

Oldsmobile codes


P0113 is Intake Air Temperature Circuit High Input, 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)

P0172 is Fuel Trim System Rich Bank 1, Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Faulty Mass Air Flow (MAF) sensor

P0304 is Cylinder # 4 Misfire,
Known Failure Points:
1. Plugs- specifically Bosch Platinum plugs tend to self-destruct
2. Ignition Control Module- Kinda a "go" or "no-go" type thing. When it fails, you most likely won't be able to start your car.
3. Coil Pack Housing (usually white, some aftermarket are black) - Seems like an unlikely part to go, but from what I hear the plastic can breakdown and cause crossfiring.
4. Coil Pack- Haven't had a bad one yet, but it's entirely possible.
5. Plug Boots- If they're old, they might dry out and crack due to the high heat they are exposed to. Again, not very likely, but when all else fails.

Jul 15, 2014 | 2000 Oldsmobile Alero

1 Answer

My 2004 fi50 has code po113 i just change the vct sensors


i moved you to F150 (ok/?) 5.4liter or what?
now you can get Ford answers and not Toyota.side show.
did you reset all DTCs after the service? (always 1st step)

VCT (or VVT in generic form)
is tricky.
in fact id never assume the sensor is bad first. (id clean them an believe them)
p0113 is IAT sensor open. (if unplugged key on, bingo)
are you using a scan tool that can see all FORD codes???
id bet not but if are, then there are many VVT codes.


Trouble Code Conditions: verbatum FSM.
Key on or engine running; and the PCM detected the IAT sensor signal was more than the self-test maximum 4.60v (Scan Tool reads under -46F). This is a thermistor-type sensor with a variable resistance that changes when exposed to different temperatures.
Possible Causes:
  • IAT sensor signal circuit is open (inspect wiring & connector)
  • IAT sensor signal circuit is shorted to VREF (5v)
  • IAT sensor is damaged or it has failed

my guess is doing service key on with IAT unplugged.

Jul 03, 2014 | Ford F-150 Cars & Trucks

1 Answer

My dodge caravan 4 cylinder engine has trouble codes 0016,0113,0700,0562


code p0016refers to the crankshaft /cam shaft position sensor bank 1 sensor A-- correlation===causes---Wiring CKP sensor--CMP sensor--mechanical fault Check timing belt is not broken
code po113 refers to intake air temp (IAT) sensor--circuit malfunction===causes ---wiring open circuit/short to positive--wiring short to ground---ground wire defective IAT sensor---ECM
code mp0700 refers to transmission control system/MIL-malfunction===causes--wiring ---TCM
code po562 refers to system voltage low==causes---wiring poor connections---battery---alternator or it also refers to ECM power relay control--circuit open===causes ---wiring--ECM ---relay. For this one check the battery terminals and posts are shiny clean and tight . Have a load test done on the battery to check for faulty cell. check condition of alternator drive belt and check alternator out put.

Sep 27, 2013 | 2003 Dodge Caravan

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

How do you fix a PO113 & PO123 code on a 02 Jeep Grand Charokee Larado 4.0



Trouble Code: P0113

IAT Sensor Circuit High Input
Possible Causes:


IAT Sensor signal circuit shorted to VREF (5v) IAT Sensor signal circuit is open, or the ground circuit is open


Trouble Code: P0123

TP Sensor/APPS Circuit High Input
Possible Causes:


Related TP Sensor engine DTCs present Intermittent wiring or connector problem TP signal circuit is open or is shorted to battery voltage or to 5v supply circuit TP sensor has failed TP sensor ground circuit is open PCM has failed IAT Sensor is damaged or it has failed (an internal open circuit) PCM has failed

Jun 02, 2012 | 2002 Jeep Grand Cherokee

2 Answers

1998 Jeep Grand Cherokee Laredo 4.oL I got a code po113


Trouble Code: P0113 (4.0L L6 VIN S Auto)
IAT Sensor Circuit High Input Print this code dataprint_icon_codes.gif Number of Trips to Set Code: 1
OBD II Monitor Type: CCM Details
Indicators: MIL Details
Trouble Code Conditions:
Check with ignition on or engine running; battery voltage more than 10v; The PCM detected the IAT Sensor input was over 4.90v (exc. Dakota, Durango, Ram) or 4.98v (Dakota, Durango, Ram) for 3 seconds.

Possible Causes:
  • IAT Sensor signal circuit shorted to VREF (5v)
  • IAT Sensor signal circuit is open, or the ground circuit is open
  • IAT Sensor is damaged or it has failed (an internal open circuit)
  • PCM has failed


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Dec 01, 2009 | 1998 Jeep Grand Cherokee

1 Answer

What does trouble code P0171 for a 2002 Buick Park Avenue mean?


Trouble Code: P0171 (3.8L V6 VIN 1 Auto)
Fuel Trim System Lean (Bank 1) Print this code dataprint_icon_codes.gif Number of Trips to Set Code: 2
OBD II Monitor Type: CCM Details
Indicators: MIL Details
Trouble Code Conditions:
DTC P0101-P0103, P0107, P0108, P0121-P0123, P0130-P0138, P0140, P0141, P0201-P0206, P0300, P0401-P0405, P0410, P0440-P0446, P0506, P0507, P1404 or P1441 not set, engine started, vehicle driven at less than 82 mph at 550-4000 rpm, BARO sensor over 70 kPa (10.1 psi), ECT sensor from 68-230ºF, IAT sensor from 64-158ºF, MAF sensor from 2.8-150 gm/s, MAP sensor from 16-105 kPa (2.6-15.2 psi), fuel level over 10%, and the PCM detected the Long Term fuel trim value was more than +20% for 6 seconds. The PCM controls the air/fuel metering system to good overall fuel economy, driveability, and emission control. During open loop, the PCM determines fuel delivery based on sensor signals, without the oxygen sensor input. During closed loop, the PCM adds oxygen sensor inputs to calculate Short and Long term fuel trim fuel delivery adjustments. Short Term fuel trim values change rapidly in response to changes in the oxygen sensor signals. Long Term fuel trim makes coarse adjustments in order to maintain an air/fuel ratio of 14.7:1.

Possible Causes:
  • Air leaks in intake manifold, exhaust pipes or exhaust manifold
  • Fuel control sensor is out of calibration (ECT, IAT or MAF)
  • Low fuel pressure (fuel filter clogged, pressure regulator failure)
  • One or more injectors restricted or pressure regulator has failed
  • HO2S element is contaminated, deteriorated or has failed
  • Vacuum hose is disconnected, broken, leaking or loose

Troubleshooting:2002 Buick Park Avenue, 3.8L, P0171

Nov 01, 2009 | 2002 Buick Park Avenue

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