P0C85 – Intermittent/Erratic Hybrid Battery Temperature Sensor “H” Circuit

P0C85 Possible Causes

  • Faulty hybrid battery thermistor
  • Faulty battery intelligence unit
  • Hybrid battery thermistor harness is open or shorted
  • Poor electrical connection in hybrid battery thermistor circuit

What Does It Mean?

How to Fix Code P0C85

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

P0C85 Possible Symptoms

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

P0C85 Meaning

Battery temperature sensors are provided at 3 HV battery locations. The resistance of the thermistor, built into each battery temperature sensor, varies according to HV battery temperature changes. The lower the battery temperature, the higher the thermistor resistance. Conversely, the higher the temperature, the lower the resistance. The battery intelligence unit uses the battery temperature sensors to detect HV battery temperature and sends the detected value to the power management control ECU. Based on the detection results, the power management control ECU controls the radiator fan. (The radiator fan starts when the HV battery temperature exceeds a predetermined level.)

Hybrid Battery Temperature Sensor “F”/”G” Correlation

P0C86 Possible Causes

  • Faulty hybrid battery thermistor
  • Faulty battery intelligence unit
  • Hybrid battery thermistor harness is open or shorted
  • Poor electrical connection in hybrid battery thermistor circuit

What Does It Mean?

How to Fix Code P0C86

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

P0C86 Possible Symptoms

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

P0C86 Meaning

Battery temperature sensors are provided at 3 HV battery locations. The thermistor resistance, built into each battery temperature sensor, varies according to HV battery temperature changes. The lower the battery temperature, the higher the thermistor resistance. Conversely, the higher the temperature, the lower the resistance. The battery intelligence unit uses the battery temperature sensors to detect HV battery temperature and sends the detected value to the power management control ECU. Based on this detection result, the power management control ECU controls the radiator fan. (The radiator fan starts when the HV battery temperature exceeds a predetermined level.)

P0C87 – “G”/”H” Correlation of Hybrid Battery Temperature Sensor

P0C87 Possible Causes

  • Faulty hybrid battery thermistor
  • Faulty battery intelligence unit
  • Hybrid battery thermistor harness is open or shorted
  • Poor electrical connection in hybrid battery thermistor circuit

What Does It Mean?

How to Fix P0C87 Code

Check 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.

P0C87 Possible Symptoms

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

P0C87 Meaning

Battery temperature sensors are provided at 3 HV battery locations. The thermistor resistance, built into each battery temperature sensor, varies with HV battery temperature changes. The lower the battery temperature, the higher the thermistor resistance. Conversely, the higher the temperature, the lower the resistance. The battery intelligence unit uses the battery temperature sensors to detect HV battery temperature and sends the detected value to the power management control ECU. Based on this detection result, the power management control ECU controls the fan. (The fan starts when the HV battery temperature exceeds a predetermined level.)

P0B00 – Phase U Current of the Auxiliary Transmission Fluid Pump Motor

P0B00 Possible Causes

  • Faulty auxiliary transmission fluid pump
  • Auxiliary transmission fluid pump harness is open or shorted
  • Poor electrical connection in auxiliary transmission fluid pump circuit

What Does It Mean?

How to Fix Code P0B00

Check 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.

P0B00 Possible Symptoms

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

P0B00 Meaning

The Engine Control Module (ECM) monitors the auxiliary transmission fluid pump motor. The ECM sets the OBDII code when the auxiliary transmission fluid pump motor signal is outside factory specifications.

P0B01 – Phase U Current of Auxiliary Transmission Fluid Pump Motor Low

P0B01 Possible Causes

  • Faulty auxiliary transmission fluid pump
  • Auxiliary transmission fluid pump harness is open or shorted
  • Poor electrical connection in auxiliary transmission fluid pump circuit

What Does It Mean?

How to Fix Code P0B01

Check 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.

P0B01 Possible Symptoms

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

P0B01 Description

The engine control module (ECM) monitors the auxiliary transmission fluid pump motor. The ECM sets the OBDII code when the auxiliary transmission fluid pump motor signal is outside factory specifications.

P0B02 – High Phase U Current of the Auxiliary Transmission Fluid Pump Motor

P0B02 Possible Causes

  • Faulty auxiliary transmission fluid pump
  • Auxiliary transmission fluid pump harness is open or shorted
  • Poor electrical connection in auxiliary transmission fluid pump circuit

What Does It Mean?

How to Fix Code P0B02

Check 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.

P0B02 Possible Symptoms

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

P0B02 Meaning

The Engine Control Module (ECM) monitors the auxiliary transmission fluid pump motor. The ECM sets the OBDII code when the auxiliary transmission fluid pump motor signal is outside factory specifications.

P0B03 – Phase V Motor Current of Auxiliary Transmission Fluid Pump

P0B03 Possible Causes

  • Faulty auxiliary transmission fluid pump
  • Auxiliary transmission fluid pump harness is open or shorted
  • Poor electrical connection in auxiliary transmission fluid pump circuit

What Does It Mean?

How to Fix Code P0B03

Check 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.

P0B03 Possible Symptoms

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

P0B03 Meaning

The engine control module (ECM) monitors the auxiliary transmission fluid pump motor. The ECM sets the OBDII code when the auxiliary transmission fluid pump motor signal is outside factory specifications.

P0B04 – Phase V Motor Current of Auxiliary Transmission Fluid Pump Low

P0B04 Possible Causes

  • Faulty auxiliary transmission fluid pump
  • Auxiliary transmission fluid pump harness is open or shorted
  • Poor electrical connection in auxiliary transmission fluid pump circuit

What Does It Mean?

How to Fix Code P0B04

Check 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.

P0B04 Possible Symptoms

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

P0B04 Meaning

The engine control module (ECM) monitors the auxiliary transmission fluid pump motor. The ECM sets the OBDII code when the auxiliary transmission fluid pump motor signal is outside factory specifications.

P0B05 – High Auxiliary Transmission Fluid Pump Motor Phase V Current

P0B05 Possible Causes

  • Faulty auxiliary transmission fluid pump
  • Auxiliary transmission fluid pump harness is open or shorted
  • Poor electrical connection in auxiliary transmission fluid pump circuit

What Does It Mean?

How to Fix Code P0B05

Check 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.

P0B05 Possible Symptoms

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

P0B05 Meaning

The engine control module (ECM) monitors the auxiliary transmission fluid pump motor. The ECM sets the OBDII code when the auxiliary transmission fluid pump motor signal is outside factory specifications.

P0B06 – W Phase Current of Auxiliary Transmission Fluid Pump Motor

P0B06 Possible Causes

  • Faulty auxiliary transmission fluid pump
  • Auxiliary transmission fluid pump harness is open or shorted
  • Poor electrical connection in auxiliary transmission fluid pump circuit

What Does It Mean?

How to Fix Code P0B06

Check 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.

P0B06 Possible Symptoms

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

P0B06 Meaning

The engine control module (ECM) monitors the auxiliary transmission fluid pump motor. The ECM sets the OBDII code when the auxiliary transmission fluid pump motor signal is outside factory specifications.