P0A18 OBD-II: Motor Torque Sensor Circuit Range/Performance

P0A18 Severity

Urgent

Should you fix P0A18 yourself?

Identifying an OBD code is just the start of a complete diagnostic routine. Most trouble codes are caused by a sensor reporting a value that is out of range. Just replacing a sensor may not fix underlying issues. Be sure to understand the code, the part or system in your car that the code refers to, and the risks of delaying professional repair.

Proper diagnosis will save you time and money on unnecessary repairs.

Urgent codes indicate immediate action is necessary. These are urgent and significant malfunctions that can cause severe damage to the vehicle or harm the driver and passengers.

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P0A18 Summary Find a Repair Shop P0A18 Details Ask RepairPal CarGenius Other OBD-II Codes

What causes OBD-II fault code P0A18?

The engine computer (PCM) monitors the amount of power the hybrid transaxle (motor/transmission assembly) produces. If the PCM does not receive a signal, code P0A18 will be stored. The Motor Torque Sensor is internal to the hybrid transaxle assembly.

OBD II Fault Code

OBD II P0A18

OBD-II Code High voltage system may not operate is defined as a Motor Torque Sensor Circuit Range/Performance

High voltage system may not operate Symptoms

High voltage system may not operate
Vehicle will not operate

Common Problems That Trigger the P0A18 Code

Hybrid transaxle assembly failure
Powertrain Control Module (PCM) failure
Wiring issue

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Other OBD-II Codes

P0A17: Motor Torque Sensor Circuit P0A16: Engine Mount "A" Control Circuit High P0A15: Engine Mount "A" Control Circuit Low P0A14: Engine Mount "A" Control Circuit/Open P0A13: DC/DC Converter Enable Circuit High P0A12: DC/DC Converter Enable Circuit Low P0A11: DC/DC Converter Enable Circuit/Open P0A10: DC/DC Converter Status Circuit High P0A0F: Engine Failed to Start P0A0E: High Voltage System Interlock Circuit Intermittent P0A0D: High Voltage System Interlock Circuit High P0A0C: High Voltage System Interlock Circuit Low P0A19: Motor Torque Sensor Circuit Low P0A1A: Generator Control Module P0A1B: Drive Motor "A" Control Module P0A1C: Drive Motor "B" Control Module P0A1D: Hybrid Powertrain Control Module P0A1E: Starter/Generator Control Module P0A1F: Battery Energy Control Module P0A20: Motor Torque Sensor Circuit High P0A21: Motor Torque Sensor Circuit Intermittent P0A22: Generator Torque Sensor Circuit P0A23: Generator Torque Sensor Circuit Range/Performance P0A24: Generator Torque Sensor Circuit Low

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