P1184 MERCURY Possible Causes

• Engine not at operating temperature
• Cooling system problem with stuck thermostat
• Faulty Engine Oil Temperature (EOT) sensor
• Engine Oil Temperature (EOT) sensor harness is open or shorted
• Poor electrical connection in the Engine Oil Temperature (EOT) sensor circuit
• Faulty Engine Control Module (ECM)

How to Fix Code P1184 MERCURY?

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

When is the Code Detected?

Indicates that the Engine Oil Temperature (EOT) signal was outside the self-test range.

Possible Symptoms

• Engine light on (or engine service warning light soon)

P1184 MERCURY Meaning

The Engine Oil Temperature (EOT) sensor is a thermistor device where 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 an electrical signal to the Engine Control Module (ECM) 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 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 at the ECM. This voltage signal is equal to the reference voltage minus the voltage drop across the fixed resistor.
The EOT sensor measures the engine oil temperature. The sensor is typically screwed into the engine oil lubrication system. The ECM can use the EOT sensor input to determine the following:
– On Variable Camshaft Timing (VCT) applications, the EOT input is used to adjust VCT control gains and camshaft timing logic.
– The ECM can use the EOT sensor input in conjunction with other ECM inputs to determine oil degradation
– The ECM can use the EOT sensor input to trigger an engine shut down. To prevent engine damage due to high oil temperature, the ECM has the capability to trigger an engine shut down. Whenever the engine speed exceeds a calibrated level for a certain period, the ECM begins to reduce power by disabling engine cylinders.

P1184 VOLKSWAGEN Possible Causes

• Faulty O2 sensor
• O2 sensor harness is open or shorted
• Poor electrical connection in the O2 sensor circuit

How to Fix P1184 VOLKSWAGEN Code?

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

Possible Symptoms

• Engine light on (or service engine soon warning light)

P1184 VOLKSWAGEN Meaning

The linear oxygen sensor common ground circuit open is the generic description for Volkswagen P1184 code, but the manufacturer may have a different description for your model and vehicle year. Currently, we don’t have more information about the Volkswagen P1184 OBDII code.

P1185 Possible Causes

• Faulty fuel pressure regulator valve (stuck open)
• Faulty rail pressure sensor
• Rail pressure sensor wiring harness is open or short-circuited
• Poor electrical connection in the rail pressure sensor circuit

How to Fix Code P1185?

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

Possible Symptoms

• Engine light on (or engine service warning light soon)

P1185 Meaning

As a rail pressure sensor input signal, the Engine Control Module (ECM) of the common rail diesel engine controls the fuel pressure regulator (integrated into the high-pressure pump) to maintain optimal rail pressure based on the engine’s current speed and load.
However, when a problem that causes the rail pressure to deviate from the target value set by the ECM occurs due to mechanical or electronic reasons, the ECM stops the engine and sets the Diagnostic Trouble Code (DTC) by limiting the fuel (stops injector operation) to prevent the engine from being controlled abnormally. “Rail Pressure Monitoring Error” is the DTC that diagnoses 1) the low-pressure fuel supply condition, 2) the mechanical operating conditions of the high-pressure pump, and 3) indirectly based on the RPS output voltage and RPS service. Therefore, repairing this DTC requires mechanics to have a complete understanding of the fuel supply system.

P1185 AUDI Possible Causes

• Faulty O2 sensor
• O2 sensor harness is open or shorted
• Poor electrical connection in O2 sensor circuit

How to Fix P1185 AUDI Code?

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

Possible Symptoms

• Engine light on (or service engine soon warning light)

P1185 AUDI Meaning

Linear oxygen sensor common ground is the generic description for Audi P1185 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we don’t have more information about the Audi P1185 OBDII code.

P1185 BUICK Possible Causes

• Faulty engine oil temperature sensor
• Engine oil temperature sensor harness is open or shorted
• Poor electrical connection in the engine oil temperature sensor circuit

How to Fix Code P1185 BUICK?

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

Possible Symptoms

• Engine light on (or service engine soon warning light)

P1185 BUICK Meaning

The engine oil temperature sensor circuit is the generic description for Buick P1185 code, but the manufacturer may have a different description for your specific model and vehicle year. Currently, we don’t have more information about the OBDII P1185 Buick code.

P1185 CADILLAC Possible Causes

• Faulty engine oil temperature sensor
• Engine oil temperature sensor harness is open or shorted
• Poor electrical connection in the engine oil temperature sensor circuit

How to Fix P1185 CADILLAC Code?

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

Possible Symptoms

• Engine light on (or service engine soon warning light)

P1185 CADILLAC Meaning

The engine oil temperature sensor circuit is the generic description for Cadillac P1185 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we don’t have more information about the OBDII P1185 Cadillac code.

P1185 CHEVROLET Possible Causes

• Faulty engine oil temperature sensor
• Engine oil temperature sensor harness is open or shorted
• Poor electrical connection in the engine oil temperature sensor circuit

How to Fix Code P1185 CHEVROLET?

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

Possible Symptoms

• Engine light on (or service engine soon warning light)

P1185 CHEVROLET Meaning

Engine oil temperature sensor circuit is the generic description for Chevrolet code P1185, but the manufacturer may have a different description for your specific vehicle model and year. Currently, we don’t have additional information about the Chevrolet P1185 OBDII code.

P1185 GMC Possible Causes

• Faulty engine oil temperature sensor
• Engine oil temperature sensor harness is open or shorted
• Poor electrical connection in the engine oil temperature sensor circuit

How to Fix GMC Code P1185?

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

Possible Symptoms

• Engine light on (or service engine soon warning light)

P1185 GMC Meaning

The engine oil temperature sensor circuit is the generic description for code P1185 Gmc, but the manufacturer may have a different description for your specific vehicle model and year. Currently, we don’t have more information about the OBDII P1185 Gmc code.

P1185 HYUNDAI Possible Causes

• Faulty fuel pressure regulator valve (stuck open)
• Faulty rail pressure sensor
• Rail pressure sensor harness is open or shorted
• Poor electrical connection in the rail pressure sensor circuit

How to Fix P1185 HYUNDAI Code?

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

Possible Symptoms

• Engine light on (or engine service warning light soon)

P1185 HYUNDAI Meaning

As a rail pressure sensor input signal, the Engine Control Module (ECM) of the common rail diesel engine controls the fuel pressure regulator (integrated into the high-pressure pump) to maintain optimal rail pressure according to the engine’s current speed and load.
However, when a problem causes the rail pressure to deviate from the target value set by the ECM due to mechanical or electronic reasons, the ECM stops the engine and sets the Diagnostic Trouble Code (DTC) by limiting fuel (stops injector operation) to prevent abnormal engine control. “Rail pressure monitoring error” is the DTC that diagnoses 1) the low-pressure fuel supply condition and 2) the mechanical operating conditions of the high-pressure pump and 3) indirectly based on the RPS output voltage and RPS service. Therefore, repairing this DTC requires mechanics to have a complete understanding of the fuel supply system.

P1185 VOLKSWAGEN Possible Causes

• Faulty O2 sensor
• O2 sensor harness is open or shorted
• Poor electrical connection in O2 sensor circuit

How to Fix P1185 VOLKSWAGEN Code?

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

Possible Symptoms

• Engine light on (or service engine soon warning light)

P1185 VOLKSWAGEN Meaning

Linear oxygen sensor common ground is the generic description for Volkswagen P1185 code, but the manufacturer may have a different description for your vehicle’s model and year. Currently, we don’t have additional information about Volkswagen P1185 OBDII code.