What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P0138Rear Secondary Heated Oxygen Sensor Circuit High VoltageP0138FRONT AND REAR SECONDARY HEATED OXYGEN SENSOR CIRCUIT HIGH VOLTAGEP0138REAR SECONDARY HEATED OXYGEN SENSOR CIRCUIT HIGH VOLTAGEManufacturer communications
8Original wording in English
ACURA
Reported code forms P0138
Dealer message - American Honda (AHM) is investigating certain 2014 MDXs with a complaint of the Malfunction Indicator Lamp (MIL) on with the DTC P0158 (Front Secondary Heated Oxygen Sensor Circuit High Voltage) and/or…
ACURA
Reported code forms P0138
Dealer message - American Honda (AHM) is investigating certain 2014 MDXs with a complaint of the Malfunction Indicator Lamp (MIL) on with the DTC P0158 (Front Secondary Heated Oxygen Sensor Circuit High Voltage) and/or…
ACURA
Reported code forms P0138
Engineering request for investigation - American Honda (AHM) is investigating certain 2014 MDXs with a complaint of the Malfunction Indicator Lamp (MIL) on with the DTC P0158 (Front Secondary Heated Oxygen Sensor…
ACURA
Reported code forms P0138
Dealer message - American Honda (AHM) is investigating certain 2014 MDXs with a complaint of the Malfunction Indicator Lamp (MIL) on with the DTC P0158 (Front Secondary Heated Oxygen Sensor Circuit High Voltage) and/or…
ACURA
Reported code forms P0138
ACURA: AN INVESTIGATION ON DIAGNOSTIC TROUBLE CODES (DTC) P0158, P0138 (FRONT AND REAR SECONDARY HEATED OXYGEN SENSOR CIRCUIT HIGH VOLTAGE) SHOWING WHEN MALFUNCTION INDICATOR LIGHT (MIL) IS ON. *PE
ACURA
Reported code forms P0138
Dealer message - American Honda (AHM) is investigating certain 2014 MDXs with a complaint of the Malfunction Indicator Lamp (MIL) on with the DTC P0158 (Front Secondary Heated Oxygen Sensor Circuit High Voltage) and/or…
Check vehicle applicability
1A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Acura | MDX | 2014 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.