Civic 2002 Power Loss P1298

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#1
2002 Honda Civic 38k miles and I don't drive it too hard. Maintenance has been kept up with. Sparkplugs are new last summer, injector cleaner added to fuel as well as the water remover Heet. . Since the winter time I have had a problem with engine power when driving after the car has been idle for some time(ex. parked at the mall). It'll start but once you start to drive it'll start to sputter, like the engine isn't getting fuel. I'll be pressing the same amount on the pedal but not much happening. I can floor it and it'll pick up and won't happen after the initial 5 mins of driving. The car is also idiling rough. Also noticable loss of power going up hills, which I'm sure happens on the flats but not as noticable Mentioned it to the dealer when I had an oil change but they could not duplicate it, no surprise there. Ok so I did use a fuel system cleaner and replaced the sparkplugs but the problem persists. I've heard it might be the timing as well as the idle control valve. Any ideas? Thank you

Error codes:

P1298 Electric Load Detector (ELD) Circuit High Voltage

Thats the code but my print out says "Manufacurer Contrl. Fuel Air Metering????

P0132 Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Circuit High Voltage

TSB: 05-006 MAY 05 Electrical - DTC P1298 Stored in ECM/PCM


P.S.

Ok maybe this might help. I'm determined to figure this out without the dealer. I was leaving the parking lot after shopping and the engine started to cut-out as described before. Instead of gunninng it and continuing on I parked it. I sat there in drive and allowed the car the struggle to reach a normal idle. It sputtered and bucked a little, but I didn't give it any gas(I was parked with my foot on the brake and the car in drive). Eventually it worked itself into a normal idle. Does this help any?
 

Transman

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#2
Identifix has shown a real trend for the ELD module going bad, out of 11 calls, 10 were fixed by replacing the ELD.
The ELD unit is built into the under-dash fuse box and works like an electronic Throttle Position Sensor (TPS) and monitors current flow so the Engine Control Module (ECM) can control the charging system.
Refer to Honda TSB #05-006. The ELD is now sold without the complete fuse box.
1. Verify that the Black (BLK) wire is a ground, the Green/Yellow (GRN/YEL) wire has battery voltage and the Green/Red (GRN/RED) wire from the ECM has 4.5 to 5v reference voltage when unplugged.

2. With the connector plugged into the fuse box and the vehicle running, as electrical loads are turned on, the voltage on the GRN/RED should drop. Normal voltage is 3 volts no load and 1.5 volts high load. If the ELD is not changing the voltage, the ELD is faulty and will need to be replaced.
Hope this helps, Transman
Have a safe and happy 4th!
 
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#3
Great and that's a cheap part to replace. I can do it myself.

Any explanation why it would only effect the car during the times described and not others?

Thank you.