2004 6.0 throwing codes
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2004 6.0 throwing codes
It is throwing theses codes
U0105
P1378
P0673
P0649
P0460
Any ideas on what it could be or what I can do to get an idea. Truck still runs fine it also has a edge tuner but is on stock tune
thank you
P1378
P0673
P0649
P0460
Any ideas on what it could be or what I can do to get an idea. Truck still runs fine it also has a edge tuner but is on stock tune
thank you
Fleet Owner
Joined: Nov 2003
Posts: 27,927
Likes: 3,651
P1378
Could be low batteries, loose connections (or excessive circuit resistance), bad relay, or even a bad FICM: FICM detects logic power low, less than 7 volts. Low batteries, loose connections/ resistance in circuit, defective relay.
P0673
#3 glow plug circuit
P0649
Cruise Control Lamp Control Circuit
P0460
Fuel level sensor A. Float arm in the tank, bad instrument cluster, you keep filling the tank up to the same level (customer fueling habits), or fuel pump module concern.
Fuel Level Sensor A circuit: TSB 06-13-11
Can be caused by the installation of aftermarket equipment such as remote starter systems and auxiliary fuel tanks.
Auxiliary fuel tanks that continuously replenish the vehicles main tank will cause a P0460. Customers that replenish the vehicles fuel tank from the auxiliary fuel tank while the key is on and engine is running, can set P0460.
The newest calibration will contain a revised strategy to eliminate the occurrence of a false P0460
Could be low batteries, loose connections (or excessive circuit resistance), bad relay, or even a bad FICM: FICM detects logic power low, less than 7 volts. Low batteries, loose connections/ resistance in circuit, defective relay.
P0673
#3 glow plug circuit
P0649
Cruise Control Lamp Control Circuit
P0460
Fuel level sensor A. Float arm in the tank, bad instrument cluster, you keep filling the tank up to the same level (customer fueling habits), or fuel pump module concern.
Fuel Level Sensor A circuit: TSB 06-13-11
Can be caused by the installation of aftermarket equipment such as remote starter systems and auxiliary fuel tanks.
Auxiliary fuel tanks that continuously replenish the vehicles main tank will cause a P0460. Customers that replenish the vehicles fuel tank from the auxiliary fuel tank while the key is on and engine is running, can set P0460.
The newest calibration will contain a revised strategy to eliminate the occurrence of a false P0460
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New User
Joined: Dec 2017
Posts: 5
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P1378
Could be low batteries, loose connections (or excessive circuit resistance), bad relay, or even a bad FICM: FICM detects logic power low, less than 7 volts. Low batteries, loose connections/ resistance in circuit, defective relay.
P0673
#3 glow plug circuit
P0649
Cruise Control Lamp Control Circuit
P0460
Fuel level sensor A. Float arm in the tank, bad instrument cluster, you keep filling the tank up to the same level (customer fueling habits), or fuel pump module concern.
Fuel Level Sensor A circuit: TSB 06-13-11
Can be caused by the installation of aftermarket equipment such as remote starter systems and auxiliary fuel tanks.
Auxiliary fuel tanks that continuously replenish the vehicles main tank will cause a P0460. Customers that replenish the vehicles fuel tank from the auxiliary fuel tank while the key is on and engine is running, can set P0460.
The newest calibration will contain a revised strategy to eliminate the occurrence of a false P0460
Could be low batteries, loose connections (or excessive circuit resistance), bad relay, or even a bad FICM: FICM detects logic power low, less than 7 volts. Low batteries, loose connections/ resistance in circuit, defective relay.
P0673
#3 glow plug circuit
P0649
Cruise Control Lamp Control Circuit
P0460
Fuel level sensor A. Float arm in the tank, bad instrument cluster, you keep filling the tank up to the same level (customer fueling habits), or fuel pump module concern.
Fuel Level Sensor A circuit: TSB 06-13-11
Can be caused by the installation of aftermarket equipment such as remote starter systems and auxiliary fuel tanks.
Auxiliary fuel tanks that continuously replenish the vehicles main tank will cause a P0460. Customers that replenish the vehicles fuel tank from the auxiliary fuel tank while the key is on and engine is running, can set P0460.
The newest calibration will contain a revised strategy to eliminate the occurrence of a false P0460
But do you think there is any correlation between all the codes. All came at once
Last edited by Quinnm04; Dec 15, 2017 at 11:34 AM. Reason: Forgot something
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Fleet Owner
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Not possible for a new battery to be bad? If you are sure of that, then the priority is determining why you are dropping below 7 volts of FICM logic power.
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Hotshot
Joined: Dec 2003
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From: Stuttgart, Ar
I'd like to know if the tuner is a flash tuner or an inline tuner that interrupts the PCM signal? Like the old switch on the fly stuff.
Fleet Owner
Joined: Nov 2003
Posts: 27,927
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Thanks for jumping in Tim!!
In addition to your questions, I guess I should have asked if the FICM is OEM or aftermarket.
Continued operation at low FICM Lpower voltage will ruin the FICM (if in fact it is low).
In addition to your questions, I guess I should have asked if the FICM is OEM or aftermarket.
Continued operation at low FICM Lpower voltage will ruin the FICM (if in fact it is low).
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