code 1396 - Ford Powerstroke Diesel Forum
 
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post #1 of 4 Old 10-17-2011, 11:03 AM Thread Starter
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code 1396

Great forum here. BTW,
My "service engine soon" light went on awhile back(month ago), I checked the codes, they were 1391 and 1393. I ordered the Stancor GPR and a fuel filter and worked on my E350 van 2 days ago. BTW, I live in Southern California, no cold weather issues here, at least lately. First time I did any of this type of stuff(glow plug, electrical, etc) on my 1997 diesel E350. (Van has 170k miles)

I checked/tested my GPR.(Had been replaced by previous owner, looked in pretty good shape) Turned key to on, put voltmeter positive clip on the switched +12 volts that is fed to the glow plugs when they are supposed to be on. This shut off after approx. 90 seconds, which told me from my research here that the GPR was fine.(I didn't put the Stancor on since I was confused as to what wires to hookup where.) I then pulled each of the 4 glow plug connectors(5 pin each, 2 on each valve cover, front and back)(you guys with trucks have it a lot easier than us with the vans) I tested for ohm resistance and got between .5-2 ohms on each front and rear pin of each 5 pin set. Changed the fuel filter, put everything back together and checked for codes. Now I had 1391, 1393, 1396, 0113 and 0472 codes! Researched a little and realized I forgot to attach the connection to my air filter setup and that I had to erase the codes! Hooked that up, erased the codes and checked for them again…NO CODES!!! Cool!!...but then the codes came back 3 days later. Then today I checked for codes before I was posting this thread and I only have a 1396 code.

Anything else I should check? The van starts up fine and runs fine, but I still have the 1396 code.

Any insight would be appreciated. Thank you everybody for having taken the time to help all of us “newbies”, etc around here.
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post #2 of 4 Old 10-18-2011, 05:12 PM
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What is each code saying?


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post #3 of 4 Old 10-18-2011, 08:39 PM
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Here's all the info (probably more than you want) on the GP Monitoring:

Glow Plug Monitor
Glow Plug Control, Comprehensive Component Monitors, and Wait to Start Indicator—California
The California glow plug system is composed of a glow plug relay, glow plug shunt strips, shunt strip monitor circuits, glow plugs, glow plug light, and the associated wiring harness. The glow plug on-time is controlled by the Powertrain Control Module (PCM) and is a function of oil temperature, barometric pressure and battery voltage. The PCM enables the Glow Plug Relay, which drives the shunt sense strips, which in turn drive the individual glow plugs. Glow plug on-time normally varies between 1 and 120 seconds. The power to the glow plugs is provided through the Glow Plug Relay directly from the vehicle battery. The PCM monitors through two shunt monitoring circuits, one per bank, and detects glow plug functionality.

Glow Plug Relay Control Circuit Check:
DTCs P0380 – Glow Plug Relay Circuit Check
Monitor execution: Continuous (Background 25ms – 50ms)
Monitor Sequence: None
Sensors OK: Not Applicable
Typical Monitoring Duration: Internal to Chip.

Typical Glow Plug Module Control Circuit Check Entry Conditions:
No Entry Conditions

Typical Glow Plug Module Control Circuit Check Malfunction Thresholds:
Internal to chip checks for open circuit, short to ground, and short to power.

Glow Plug Monitor Operation:
DTCs:
P1391 – Glow Plug Bank 1 Failure
P1393 – Glow Plug Bank 2 Failure
P1395 – Absolute Voltage Drop Across Bank # 1
P1396 – Absolute Voltage Drop Across Bank # 2

Monitor execution:
P1391 – Continuous
P1393 – Continuous
P1395 – During the absolute test
P1396 – During the absolute test
Monitor Sequence: None
Sensors OK: Not Applicable

Monitoring Duration:
P1395 – Greater than 30 seconds.
P1396 – Greater than 30 seconds.

Typical Glow Plug Monitor Entry Conditions:
P1391 – Battery Voltage (IVPWR) is between 11.5 and 14 Volts and Glow Plug Duty Cycle is 100%.
P1393 – Battery Voltage (IVPWR) is between 11.5 and 14 Volts and Glow Plug Duty Cycle is 100%.
P1395 – Battery Voltage (IVPWR) is between 11.5 and 14 Volts, Glow Plug Duty Cycle is 100%, and Glow Plug on time is greater than 30.5 seconds.
P1396 – Battery Voltage (IVPWR) is between 11.5 and 14 Volts, Glow Plug Duty Cycle is 100%, and Glow Plug on time is greater than 30.5 seconds.

Typical Glow Plug Monitor Malfunction Thresholds:
P1391 – When the Bank #1 shunt signal is lower than a specified value (.66 volts) the fault is set.
P1393 – When the Bank #2 shunt signal is lower than a specified value (.66 volts) the fault is set.
P1395 – During the absolute test a fault is set if the voltage drops below a specified value (155 A/D counts) on Bank #1.
P1396 – During the absolute test a fault is set if the voltage drops below a specified value (155 A/D counts) on Bank #2.

Glow Plug Wait to Start Light Operation:
DTCs:
P0381 – Glow Plug indicator circuit malfunction
Monitor execution: Continuous (Background 25ms-50ms)
Monitor Sequence: None
Sensors OK: Not applicable
Typical Monitoring Duration: Internal to Chip

Glow Plug Light Wait to Start Light Entry Conditions:
Glow Plugs Enabled

Glow Plug Light Wait to Start Light Malfunction Thresholds:
Status internal to chip

Cheers!

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post #4 of 4 Old 10-19-2011, 08:04 AM Thread Starter
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Thanks Patrick, I appreciate it.
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