P1298 - FAULT CODE - OBD2

P1298 HONDA - ELECTRIC LOAD DETECTOR HIGH VOLTAGE CIRCUIT

The fault code P1298 OBDII is a manufacturer specific code related by Honda as a fault in one of the components of the charging system, which is commonly known as ELD (Electric Load Detector). It is set when a high voltage condition is detected above the levels allowed. ELD devices are used only in Honda vehicles.

The Electrical Load Detector transforms the current in the fuse and relay box located under the bonnet. Although the design of the ELD could be confused with a fuse, its function is to detect current drawn from the battery and charging system. The Powertrain Control Module regulates the voltage applied to the coil according to the signal received by the ELD. In this way, a variation of the alternator voltage output allows meeting the charging requirements.

When factory accessories are used, usually those of the air conditioning system and the lighting system, the output of the alternator is close to 14.4 volts. On the other hand, when you do not use such accessories, it is necessary to reduce the alternator output to increase the fuel efficiency and life of the alternator.

• The Check Engine light turns on.
• The battery is constantly discharged.
• The alternator produces weird noises.
• Constant battery failures.

The reasons to set DTC code P1298 OBD2:

• The Electrical Load Detector may be in poor condition.
• The alternator could be overloaded by a defective internal regulator.
• The PCM may have a programming error.

To solve the diagnostic code P1298 OBDII, you must do this:

• When diagnosing a DTC code, it is always advisable to start with the TSB
• Check the alternator and battery thoroughly, as well as all cables and connectors related to the charging and starting system. If you discover common damage to any of these components, make the appropriate repairs or changes.
• Make voltage tests on the alternator. Compare these results to those shown by a scanner. If the scanner shows a voltage output signal greater than that indicated by the meter, the ELD is possibly defective, replace it.