2 codes, p1111 and p1013
Thread Starter
Melting Slicks
Joined: May 2007
Posts: 2,113
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From: Houston TX
2 codes, p1111 and p1013
I have posted 2 threads in the past about a p1013 code and now I am also getting a p1111 code as well.Can someone tell me what the p1111 code means and what it has to do in conjunction with the p1013 code?i've cleaned my maf off with maf cleaner several times and it does not go away.This leads me to believe my MAF is going south.
What is awkward is that the CEL goes away periodically.I may have the CEL on for a week,go off for a few days then come back again for a while.Also,whenever I fill up at the gas station,the CEL tends to go off.
Anyone have any ideas?
What is awkward is that the CEL goes away periodically.I may have the CEL on for a week,go off for a few days then come back again for a while.Also,whenever I fill up at the gas station,the CEL tends to go off.
Anyone have any ideas?
Thread Starter
Melting Slicks
Joined: May 2007
Posts: 2,113
Likes: 0
From: Houston TX
Safety Car
Joined: Jan 2001
Posts: 4,385
Likes: 689
From: Boise ID
DTC P1111 Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage
Circuit Description
The intake air temperature (IAT) sensor contains a semiconductor device which changes resistance based on temperature (a thermistor). The IAT sensor mounts in the air intake passage of the engine air induction system. The IAT sensor has a signal circuit and a ground circuit. The PCM applies a voltage (about 5 volts) on the signal circuit to the sensor. The PCM monitors changes in this voltage caused by changes in the resistance of the sensor in order to determine the intake air temperature.
When the PCM senses a signal voltage higher than the normal operating range of the sensor, this DTC sets.
Conditions for Running the DTC
DTCs P0102, P0103, P0117, P0118, P0500, P0502, P0503 are not set.
The engine is operating longer than 100 seconds.
The ECT is greater than 0°C (32°F).
The vehicle speed is less than 11 km/h (7 mph).
The Mass Air Flow is less than 15 grams per second.
Conditions for Setting the DTC
Intake Air Temperature is less than -35°C (-31°F).
The intermittent condition exists for a total of 1.0 second during a 20.0 second time period.
Action Taken When the DTC Sets
The powertrain control module (PCM) stores the DTC information into memory when the diagnostic runs and fails.
The malfunction indicator lamp (MIL) will not illuminate.
The PCM records the operating conditions at the time the diagnostic fails. The PCM stores this information in the Failure Records.
Conditions for Clearing the DTC
A last test failed, or current DTC, clears when the diagnostic runs and does not fail.
A history DTC will clear after 40 consecutive warm-up cycles, if no failures are reported by this or any other non-emission related diagnostic.
Use a scan tool in order to clear the DTC.
Diagnostic Aids
Important
Remove any debris from the PCM connector surfaces before servicing the PCM. Inspect the PCM connector gaskets when diagnosing/replacing the module. Ensure that the gaskets are installed correctly. The gaskets prevent contaminate intrusion into the PCM.
For any test that requires probing the PCM or a component harness connector, use the Connector Test Adapter Kit J 35616-A . Using this kit prevents damage to the harness/component terminals. Refer to Using Connector Test Adapters in Wiring Systems.
If the engine has sat overnight, the engine coolant temperature and intake air temperature values should display within a few degrees of each other. If the temperatures are not within 3°C (5°F), refer to Temperature vs Resistance table.
For an intermittent, refer to Symptoms .
Test Description
The numbers below refer to the step numbers on the diagnostic table.
If DTC P0113 failed this ignition, this indicates a hard failure is present. When a hard failure is present, both the hard and intermittent DTCs set.
When moving related connectors, visually/physically inspect connectors closely.
When moving the related wiring harnesses, visually/physically inspect the wiring closely.
Using the Freeze Frame and/or Failure Records data may aid in locating an intermittent condition. If you cannot duplicate the DTC, the information included in the Freeze Frame and/or Failure Records data can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can also help determine how many ignition cycles the diagnostic reported a pass and/or a fail. Operate the vehicle within the same freeze frame conditions (RPM, load, vehicle speed, temperature, etc.) that you observed. This will isolate when the DTC failed.
