P1115 CHRYSLER – General Temperature Rationality

P1115 CHRYSLER Possible Causes

  • First check for other fault codes

How to Fix P1115 CHRYSLER Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

When is the Code Detected?

The Engine Control Module (ECM) detected a fault when comparing ambient air temperatures, coolant temperature, and intake air

Possible Symptoms

Check engine light illuminated (or service engine soon warning light)

P1115 CHRYSLER Meaning

General temperature rationality is the generic description for Chrysler P1115 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we don’t have more information about the Chrysler P1115 OBDII code.

P1115 GMC – Intermittent High Voltage in Engine Coolant Temperature Sensor Circuit

P1115 GMC Possible Causes

  • Faulty Engine Coolant Temperature (ECT) sensor
  • Low engine coolant level
  • Engine Coolant Temperature (ECT) sensor harness is open or shorted
  • Poor electrical connection in the Engine Coolant Temperature (ECT) sensor circuit
  • Faulty engine coolant thermostat

How to Fix P1115 GMC Code?

Start by checking the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Engine light on (or engine service warning light soon)

P1115 GMC Meaning

The Engine Coolant Temperature (ECT) sensor contains a semiconductor device that changes resistance based on temperature (a thermistor). The ECT sensor is mounted in the left bank cylinder head near the front of the engine. The ECT sensor has a signal circuit and a ground circuit. The PCM applies a voltage (approximately 5.0 volts) to the sensor signal circuit. The PCM monitors changes in this voltage caused by changes in the sensor’s resistance to determine the engine coolant temperature.
When the engine coolant is cold, the sensor resistance (thermistor) is high and the PCM signal voltage is only slightly lowered across the sensor to ground. The PCM detects a high signal voltage (low temperature). When the engine coolant is hot, the sensor resistance is low and the signal voltage is lowered further. This causes the PCM to detect a low signal voltage (high temperature).

P1115 Honda – Intermittent High Voltage in Engine Coolant Temperature Sensor Circuit

P1115 HONDA Possible Causes

  • Faulty Engine Coolant Temperature (ECT) sensor
  • Low engine coolant level
  • Engine Coolant Temperature (ECT) sensor harness is open or shorted
  • Poor electrical connection in Engine Coolant Temperature (ECT) sensor circuit
  • Faulty engine coolant thermostat

How to Fix P1115 HONDA Code?

Start by checking the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P1115 HONDA Meaning

The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the Engine Control Module (ECM). The modified signal returns to the ECM as an engine coolant temperature input. The sensor uses a thermistor sensitive to temperature change. The electrical resistance of the thermistor decreases as temperature increases.

P1115 HYUNDAI – Engine Coolant Temperature Sensor Circuit – Intermittent High Input

P1115 HYUNDAI Possible Causes

  • Faulty Engine Coolant Temperature (ECT) sensor
  • Low engine coolant level
  • Engine Coolant Temperature (ECT) sensor harness is open or shorted
  • Poor electrical connection in Engine Coolant Temperature (ECT) sensor circuit
  • Faulty engine coolant thermostat

How to Fix P1115 HYUNDAI Code?

Start by checking the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P1115 HYUNDAI Meaning

The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the Engine Control Module (ECM). The modified signal returns to the ECM as an engine coolant temperature input. The sensor uses a thermistor sensitive to temperature change. The electrical resistance of the thermistor decreases as temperature increases.

P1115 ISUZU – ECT Sensor Circuit Intermittent Voltage High

P1115 ISUZU Possible Causes

  • Faulty Engine Coolant Temperature (ECT) sensor
  • Low engine coolant level
  • Engine Coolant Temperature (ECT) sensor harness is open or shorted
  • Poor electrical connection in Engine Coolant Temperature (ECT) sensor circuit
  • Faulty engine coolant thermostat

How to Fix P1115 ISUZU Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Check engine light illuminated (or service engine soon warning light)

P1115 ISUZU Meaning

The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the Engine Control Module (ECM). The modified signal returns to the ECM as an engine coolant temperature input. The sensor uses a thermistor sensitive to temperature change. The electrical resistance of the thermistor decreases as the temperature increases.

P1115 JEEP – General Temperature Rationality

P1115 JEEP Possible Causes

  • First check for other service codes

How to Fix JEEP P1115 Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

When is the Code Detected?

The Engine Control Module (ECM) detected a fault when comparing ambient air temperatures, coolant temperature, and intake air

Possible Symptoms

Check engine light illuminated (or service engine soon warning light)

P1115 JEEP Meaning

General temperature rationality is the generic description for Jeep P1115 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we don’t have more information about the Jeep P1115 OBDII code.

P1115 KIA – Engine Coolant Temperature Sensor Signal from ECU to TCU

P1115 KIA Possible Causes

  • Faulty Engine Coolant Temperature (ECT) sensor
  • Low engine coolant level
  • Engine Coolant Temperature (ECT) sensor harness is open or shorted
  • Poor electrical connection in Engine Coolant Temperature (ECT) sensor circuit
  • Faulty engine coolant thermostat

How to Fix P1115 KIA Code?

Start by checking the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

What Does It Mean?

For 1996 Kia models, code P1115 corresponds to the Bank 1 Sensor 1 low voltage circuit of the HO2S.

Possible Symptoms

Check Engine Light On (or Service Engine Soon Warning Light)

P1115 KIA Meaning

The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the Engine Control Module (ECM). The modified signal returns to the ECM as an engine coolant temperature input. The sensor uses a thermistor sensitive to temperature change. The electrical resistance of the thermistor decreases as temperature increases.

P1115 LEXUS – Coolant Temperature Sensor Circuit for Heat Storage System

P1115 LEXUS Possible Causes

  • Faulty Engine Coolant Temperature (ECT) sensor for HST
  • Low engine coolant level
  • Engine Coolant Temperature (ECT) sensor for HST circuit open or shorted
  • Engine Coolant Temperature (ECT) sensor for HST circuit poor electrical connection
  • Faulty engine coolant thermostat

How to Fix P1115 LEXUS Code?

Start by checking the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Check Engine Light On (or Service Engine Soon Warning Light)

P1115 LEXUS Meaning

The Coolant Temperature Sensor Circuit for Heat Storage System is the generic description for Lexus P1115 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we don’t have more information about the Lexus P1115 OBDII code.

P1115 LINCOLN – High value of intake air temperature sensor circuit 2

P1115 LINCOLN Possible Causes

  • Faulty Intake Air Temperature Sensor 2
  • Intake Air Temperature Sensor 2 harness is open or shorted
  • Intake Air Temperature Sensor 2 circuit poor electrical connection
  • Damaged Powertrain Control Module (PCM)

How to Fix Code P1115 LINCOLN?

Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

What Does It Mean?

Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with mass air flow sensor cleaner. Reset the code and drive the vehicle. If the code returns, the mass air flow sensor may need to be replaced. Monitor the IAT on a scan tool. Look for sudden changes in the reading when the harness is shaken or the sensor is tapped.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P1115 LINCOLN Meaning

The IAT sensor is a thermistor device in which resistance changes with temperature. The electrical resistance of a thermistor decreases as temperature increases and resistance increases as temperature decreases. The variable resistance affects the voltage drop across the sensor terminals and provides electrical signals to the Powertrain Control Module (PCM) corresponding to temperature.

Thermistor type sensors are considered passive sensors. A passive sensor is connected to a voltage divider network so that the change in the passive sensor’s resistance causes a change in the total current flow. The voltage that drops across a fixed resistor in series with the sensor resistance determines the voltage signal to the PCM. This voltage signal equals the reference voltage minus the voltage drop across the fixed resistor.
The IAT sensor provides air temperature information to the PCM. The PCM uses the air temperature information as a correction factor in the calculation of fuel, spark, and air flow.

The IAT sensor provides faster response time to temperature change than the ECT or CHT sensor.
Currently, there are 2 types of IAT sensors used, a standalone, non-integrated type and an integrated type. Both types work the same way, but the integrated type is incorporated into the Mass Air Flow (MAF) sensor instead of being a standalone sensor.

P1115 MERCURY – High Value of Intake Air Temperature Sensor Circuit 2

P1115 MERCURY Possible Causes

  • Faulty Intake Air Temperature Sensor 2
  • Intake Air Temperature Sensor 2 harness is open or shorted
  • Poor electrical connection in the Intake Air Temperature Sensor 2 circuit
  • Damaged Powertrain Control Module (PCM)

How to Fix Code P1115 MERCURY?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

What Does It Mean?

Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with a mass air flow sensor cleaner. Reset the code and drive the vehicle. If the code returns, it may be necessary to replace the mass air flow sensor. Monitor the IAT on a scan tool. Look for sudden changes in the reading when the harness is shaken or the sensor is tapped.

Possible Symptoms

Check Engine Light illuminated (or Service Engine Soon warning light)

P1115 MERCURY Meaning

The IAT sensor is a thermistor device in which resistance changes with temperature. The electrical resistance of a thermistor decreases as the temperature increases and the resistance increases as the temperature decreases. The variable resistance affects the voltage drop across the sensor terminals and provides electrical signals to the Powertrain Control Module (PCM) corresponding to the temperature.

Thermistor-type sensors are considered passive sensors. A passive sensor is connected to a voltage divider network so that the change in the resistance of the passive sensor causes a change in the total current flow. The voltage that drops across a fixed resistor in series with the sensor resistance determines the voltage signal to the PCM. This voltage signal is equal to the reference voltage minus the voltage drop across the fixed resistor.

The IAT sensor provides air temperature information to the PCM. The PCM uses the air temperature information as a correction factor in the calculation of fuel, spark, and airflow.

The IAT sensor provides a faster response time to temperature change than the ECT or CHT sensor.
Currently, there are 2 types of IAT sensors used, a standalone, non-integrated type and an integrated type. Both types function the same way, but the integrated type is incorporated into the Mass Air Flow (MAF) sensor instead of being a standalone sensor.