DTC P1297
DTC P1297: Electrical Load Detector (ELD) Circuit Low Voltage
General Description
The electrical load detector (ELD) is built into the main under-hood fuse box. It monitors the current fed to the ignition switch and sends a signal to the powertrain control module (PCM). If the ELD output voltage is extremely low, the PCM detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type, OBD Status
| Execution | Continuous |
| Sequence | None |
| Duration | 5.0 seconds or more |
| DTC Type | Two drive cycles, MIL off |
| OBD Status | PASSED/FAILED/NOT COMPLETED (STILL TESTING) |
Enable Conditions
| Condition | Minimum | Maximum |
|---|---|---|
| Battery voltage [BATTERY] |
10.0 V | - |
| Ignition switch or Engine start/stop button | Vehicle ON mode | |
| No active DTCs set (prevents monitor from running) | P1298 | |
[ ]: HDS Parameter
Malfunction Threshold
The ELD output voltage [ELD SENSOR OUTPUT VOLTAGE] is 0.27 V or less for at least 5.0 seconds.
Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
- ELD ELD line short to ground
- ELD power supply line open
- ELD failure
- PCM internal circuit failure
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the PCM memory. If the malfunction returns in the next (second) drive cycle, a Confirmed DTC and the freeze data are stored. The MIL does not come on.
Conditions for clearing the DTC
The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the battery.