DTC P154B (1.5 L Engine) (2020 2021)
DTC P154B : Battery Sensor Characteristic Abnormal
NOTE: Before you troubleshoot, review the general troubleshooting information .
| DTC Description | Confirmed DTC | Pending DTC |
|---|---|---|
| P154B Battery Sensor Characteristic Abnormal |
DTC (PGM-FI)
- DTC check
-1. Turn the vehicle to the ON mode.
-2. Check the Pending or Confirmed DTCs with the HDS.
DTC Description Confirmed DTC Pending DTC P0112 IAT Sensor 1 Circuit Low Voltage P0113 IAT Sensor Circuit High Voltage Is DTC P0112 and/or P0113 indicated?
YES
Go to the indicated DTC's troubleshooting.
NO
Go to step 2.
- 12 volt battery temperature check
-1. Open the hood, and measure the temperature around the 12 volt battery sensor with a thermometer.
-2. Start the engine, and let it idle for 10 seconds, then check the parameter (s) below with the HDS.
Signal Current conditions Values Unit ESTIMATED BATTERY TEMPERATURE Does the value of ESTIMATED BATTERY TEMPERATURE differ 41 deg. F (23 deg. C) or more from the value of the thermometer?
YES
Replace the 12 volt battery sensor .
NO
Go to step 3.
- 12 volt battery sensor signal check
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Turn the vehicle to the ON mode.
-3. Check the parameter (s) below with the HDS.
Signal Threshold Current conditions Values Unit Values Unit BATTERY CURRENT (BATTERY SENSOR) More than 0 A Do the current condition (s) match the threshold?
YES
Replace the 12 volt battery sensor .
NO
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the 12 volt battery sensor and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .