Check Engine Light
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,064
Likes: 2,092
From: Ohio
Pull the codes, lights are not flashing because it is close to Christmas, it means a sensor is out of range or even the engine position death code is just around the corner. Listing the method to check the codes, they will be stored as mentioned.
How To Determine Trouble Codes Stored By The ECM For EFI-Equipped FLTs *
(* Based on information gleaned from the 1998-2001 FLT Service Manuals **)
(** Special thanks to HogDoctor for supplying the information used in making this page)
Knowing which trouble codes are stored by your bike's ECM can greatly assist you in determining the source of a problem you are having. In order to check the codes on an EFI-equipped Electra Glide (FLHTC/U-I), Road Glide (FLTR-I) or Road King (FLHRC-I) without the benefit of a scanalyzer, do the following:
Set the handlebar kill switch to 'on'
Turn the key switch to 'IGNITION' for 3 seconds
Turn the key switch back to 'OFF' for another 3 seconds
Again turn the key switch to 'IGNITION' for 3 seconds
Again turn the key switch back to 'OFF for another 3 seconds
Now turn the key switch back to 'IGNITION' and wait.
8 seconds after the last step, a sequence of flashing lights will begin (from the engine-check light). These let you read out the codes stored by the bike's ECM. Read the following to understand how to interpret the sequences:
First the light will flash an 'intermission' sequence. This is a series of rapid flashes (3 per second) to tell you it is about to transmit a trouble code. The rapid flashing will then pause for 2 seconds. This tells you that it is about to parse out the first trouble code.
The engine-check light will now flash at a rate of 1 beat/second to give you the first digit in the first trouble code the ECM has stored (just count the beats to get the number). It will then pause for 2 seconds and flash out the second digit at 1 beat/second and pause again for 2 seconds to tell you it is finished transmitting that digit (there are always 2 digits for a complete trouble code). Record these 2 digits so you can translate them, using the table below.
It is possible that there is more than one trouble code stored by the ECM, so the rapid-flashing 'intermission' sequence will start again, followed once more by a 2 second pause to tell you it is going to parse out another code. Just keep reading the codes as described above until you get the same code fed back to you, because the whole cycle will keep repeating once the last code is flashed out.
To interpret the code (or codes) you have read out, refer to the chart presented below:
Trouble Code Description of Fault
11 Throttle Position Sensor
12 Barometric Pressure Sensor
14 Engine Temperature Sensor
15 Intake Air Temperature Sensor
16 Battery Positive Voltage
23 Front Injector
24 Front Ignition Coil
25 Rear Ignition Coil
32 Rear Injector
33 Fuel Pump Relay
52 ECM RAM Error *
53 ECM ROM Error *
54 EEPROM Error *
55 Microprocessor Malfunction *
56 Crank Position Sensor/Cam Position Sensor Signal Error **
How To Determine Trouble Codes Stored By The ECM For EFI-Equipped FLTs *
(* Based on information gleaned from the 1998-2001 FLT Service Manuals **)
(** Special thanks to HogDoctor for supplying the information used in making this page)
Knowing which trouble codes are stored by your bike's ECM can greatly assist you in determining the source of a problem you are having. In order to check the codes on an EFI-equipped Electra Glide (FLHTC/U-I), Road Glide (FLTR-I) or Road King (FLHRC-I) without the benefit of a scanalyzer, do the following:
Set the handlebar kill switch to 'on'
Turn the key switch to 'IGNITION' for 3 seconds
Turn the key switch back to 'OFF' for another 3 seconds
Again turn the key switch to 'IGNITION' for 3 seconds
Again turn the key switch back to 'OFF for another 3 seconds
Now turn the key switch back to 'IGNITION' and wait.
8 seconds after the last step, a sequence of flashing lights will begin (from the engine-check light). These let you read out the codes stored by the bike's ECM. Read the following to understand how to interpret the sequences:
First the light will flash an 'intermission' sequence. This is a series of rapid flashes (3 per second) to tell you it is about to transmit a trouble code. The rapid flashing will then pause for 2 seconds. This tells you that it is about to parse out the first trouble code.
The engine-check light will now flash at a rate of 1 beat/second to give you the first digit in the first trouble code the ECM has stored (just count the beats to get the number). It will then pause for 2 seconds and flash out the second digit at 1 beat/second and pause again for 2 seconds to tell you it is finished transmitting that digit (there are always 2 digits for a complete trouble code). Record these 2 digits so you can translate them, using the table below.
It is possible that there is more than one trouble code stored by the ECM, so the rapid-flashing 'intermission' sequence will start again, followed once more by a 2 second pause to tell you it is going to parse out another code. Just keep reading the codes as described above until you get the same code fed back to you, because the whole cycle will keep repeating once the last code is flashed out.
To interpret the code (or codes) you have read out, refer to the chart presented below:
Trouble Code Description of Fault
11 Throttle Position Sensor
12 Barometric Pressure Sensor
14 Engine Temperature Sensor
15 Intake Air Temperature Sensor
16 Battery Positive Voltage
23 Front Injector
24 Front Ignition Coil
25 Rear Ignition Coil
32 Rear Injector
33 Fuel Pump Relay
52 ECM RAM Error *
53 ECM ROM Error *
54 EEPROM Error *
55 Microprocessor Malfunction *
56 Crank Position Sensor/Cam Position Sensor Signal Error **
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,064
Likes: 2,092
From: Ohio
Just tell Santa to leave a large cube Evo under the tree, I'm to big to sit on his lap anymore.
Road Master
Joined: Oct 2011
Posts: 957
Likes: 2
From: Carlsbad Springs Ontario
Santa.
Getting old sucks bigtime .
My gut getts bigger every year and whats worse is that sadly enough , i dont really give a **** anymore .
**** anyone...? lol.
Seasoned HDF Member
Joined: Feb 2007
Posts: 6,057
Likes: 1,115
From:
Been awhile since I been on. New job (real estate) is hammering me. We got some nice weather on Thanksgiving Here in Kentucky so I ride the bike to see family 100 miles away. Half way there the check engine light kicks on and stays on for 5 to 10 seconds and goes off. A few minutes later it does it again. And then again but never comes on the rest of the way. No change in how the bike is performing. Very smooth.
On the way home I get half way and it starts again and does it 4 times then nothing the rest of the way. Any ideas. It does have 50k and it is a 98 Electra Glide.
On the way home I get half way and it starts again and does it 4 times then nothing the rest of the way. Any ideas. It does have 50k and it is a 98 Electra Glide.
The check engine light on/off is a signal that a sensor is getting incorrect input.
The short version:
1-We need to read the codes "FREE" and no tools. see above post.
2-highly likely it is a code #56..due to age/miles.
3-Look at the right foot floor board. Look at the timer cover (circle thing with two rivits and V2 logo). Look at the black cable that exits from below that timer cover. See the melted goo? That means it is melting. It can be changed on your own in about 1.5 hours working slowly but the part is a little pricey. No special tools other than a piece of allen wrench. Read the codes first but that would be a common cause..Also, Please check the connection for the crank position sensor hidden behind the right side painted plastic cover. pop cover off. The connector wire is black and is well hidden behind frame tube in that triangle of frame area. It is a plug-in and twist connector that sometimes can get loose and cause an intermittent hesitation/miss over bumps.It drove me crazy until i realized the loose connection was my problem.
Last edited by im; Dec 16, 2012 at 10:40 PM.
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