B1676 – Battery Pack Voltage Out Of Range
Last Updated 2020-08-20
Automobile Repair Shop Owner
|Code||Fault Location||Probable Cause|
|B1676|| Battery Pack Voltage Out Of Range |
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Table of Contents
- What Does Code B1676 Mean?
- Where is the B1676 sensor located?
- What are the common causes of code B1676?
- What are the symptoms of code B1676?
- Get Help with B1676
What Does Code B1676 Mean?
OBD II fault code B1676 is a manufacturer-specific trouble code that is defined by carmakers Ford, Lincoln, Mercury, Mazda, Jaguar, and Mazda as “Battery Pack Voltage out Of Range”, and is set when the PCM (Powertrain Control Module) detects an abnormal battery voltage.
NOTE: It should be noted that the definition “Battery Pack Voltage out Of Range” could be confusing, if not downright misleading. In generally accepted automotive jargon, a “battery pack” typically refers to a series of batteries that are connected to form a “pack of batteries” such as the high-voltage battery packs one finds in hybrid and electric vehicles. In practice though, this code is used by some manufacturers to refer to the two batteries found in some pick-up trucks with large diesel engines, hence the tenuous reference to a “battery pack”. The reasons for the inclusion of the word “pack” in some resources are not clear, though.
Nonetheless, in most resources and databases maintained by carmakers that have assigned code B1676 to battery voltage issues, code B1676 is defined as “Battery Voltage out Of Range”, without reference being made to a battery “pack”.
There are many examples of trouble codes that seem to indicate problems with a particular part, system, or component, when in fact, the code refers to something else entirely, and in the case of code B1676, the confusion around the wording of its definition extends to the problems it has come to describe.
Code B1676 is a good example of how some codes have ambiguous meanings; on the surface, code B1676 appears to be related to low battery voltages on the vehicle makes listed above, when, in fact, it refers to faults, failures, malfunctions, and defects mainly in the ABS braking systems of these vehicles. Here is how it works-
One of the requirements of an advanced ABS braking system is that it should be supplied with a constant voltage/current that is maintained within a range of minimum and maximum allowable values to reduce the possibility that the operation of associated systems such as Stability Control, Traction Control, Adaptive Cruise Control, Electronic Brake Distribution, Accident Mitigation, and others can be affected negatively.
In a fully functional system, the battery voltage to the ABS control module, which largely manages the associated systems listed above in conjunction with dedicated control modules, will remain relatively constant, and minor fluctuations in current and/or voltage supplied to the ABS system will not have noticeable effects on the operation of these systems. However, in practice, the ABS system, and particularly the ABS control modules and their associated wiring on listed vehicles are not particularly fault-tolerant, which is compounded by the fact that the PCM interprets faults, failures, defects, and malfunctions in the ABS control module and associated wiring as low battery voltages- for reasons that are not entirely clear.
As a practical matter though, fluctuations that are large enough to trigger code B1676 are almost invariably caused by malfunctions and/or defects in failing or failing ABS control modules or in less-than-perfect associated wiring, as opposed to being caused by damaged, defective, or discharged batteries that are impeding current flow to, or through one or more systems/components such as the ABS control module and associated safety systems whose correct operation depend entirely on the ABS module working correctly.
Nonetheless, code B1676 will set on listed vehicles if any fault, failure, defect, or malfunction in the ABS control module and/or its associated wiring causes the PCM to measure the voltage that is supplied to the ABS control module as being below 9V, or above 19V for longer than 8 consecutive seconds.
Where is the B1676 sensor located?
This image shows the appearance and location of the ABS pump/control module on the Ford Ranger truck; note the location of the ABS unit relative to the battery (to its left) in this view. Note that while this particular ABS unit is easily accessible, this is not always the case on many vehicles listed here. In some cases, the ABS pump may be squeezed in between the engine and the firewall, and it may sometimes be necessary to remove or disassemble unrelated components to gain easy access to the ABS pump.
Nonetheless, in terms of appearance, all ABS units follow the general pattern of this example, which makes it easy to locate the unit, if not always easy to access it for purposes of testing and/or removal.
What are the common causes of code B1676?
NOTE: While defects and malfunctions in the ABS system are the most common causes of code B1676 on listed vehicles, defects, failures, and malfunctions in batteries and/or the charging system can also cause this code to set. Therefore, it is recommended that the batteries and the charging system be tested to confirm or eliminate these issues as the root cause of the code.
Nonetheless, typical causes of code B1676 are largely similar across all listed applications, and could include one or more of the following-
- Defective, faulty, or malfunctioning ABS pump and/or control module (Most common)
- Damaged, burnt, shorted, disconnected, or corroded wiring and/or connectors anywhere in the ABS or related/associated system(s)
- Blown fuse and/or fusible links in the ABS and/or associated systems
- Failed or failing PCM, but note that since this is a rare event, the fault must be sought elsewhere before any control module is replaced or reprogrammed
What are the symptoms of code B1676?
Common symptoms of code B1676 are much the same across all listed applications, and could include one or more of the following-
- Stored trouble code and illumined ABS and/or other warning lights, including possibly, the charging system light
- Depending on the nature of the problem, multiple additional codes could be present along with B1676
- ABS braking functionality may not be available, although normal braking will almost certainly be available
- Safety systems such as Traction Control, Stability Control, and others may be disabled, or may not be available
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I have a 2015 Fleetwood Southwind with a ford v10. I got code b1676. No warning lights illuminated just did a check with my obd2 reader and this code came up. Where is the control pump/module? Or should i look at something else..BTW i am not a mechanic.
This relates to the ABS module.
1st things first; check your fuses. A blown fuse will easily cause this issue. That’s what the code is telling you, is that voltage has dropped low to the ABS system.
Also, check all ABS-related relays. Verify that the connectors aren’t burnt or corroded.
Because this is a motorhome there’s not much information on it, but you should have all you need in the owner’s manual.
Let me know what you find.
B1676, C1198,c1214 c1206,and c1194? Code?All came up, Changed my control module from the junk yard and all went away besides b1676 any idea?
Clear all codes, drive the vehicle above 10 mph/16kph, and see if the B1676 returns. If so, disconnect the ABS module connector and verify the voltage between pin 16, TN/RD wire, and pin 8, LG/YE wire with the engine running. It should be between 9.5 and 16 volts. If it is, then a faulty ABS module is suspected.
That’s all the diagnostic flowchart has to diagnose this issue. I wish there was something else, but that’s all there is, which is some good news, as the diagnosis is short and sweet.
Good luck, and let us know how it goes.
My daughter accidentally hooked up the battery wrong and now I’m getting the B1676 code on her 2011 Ford Escape. It will start up, but the ABS light, traction light, battery light is on and the power steering is off. Will I need to replace the alternator, fusible link, and fuses? What do I need to do to diagnose and repair the problem?
Hello. I would start with the fuses to the power steering (eps fuse), all the ABS fuses, and the alternator fuse. They are probably all blown.
The first thing to do is verify the charging system voltage. Start the engine with a voltmeter hooked to the battery. With the engine running it should be between 12.6 – 14.5 volts. If you see the voltage at 16-18 volts, the voltage regulator has taken a hit inside the alternator and the alternator will need to be replaced. If the voltage is correct, then all fuses will need to be tested and verified that they haven’t blown. Let us know how this goes.
I have a 2004 super duty 350 twin turbo tows diesel ran out of fuel and the batteries that I had in this were not the correct batt..they were for Camry cars.with 600 cranking amps. the problem is I ran out of gas at a light couldn’t get it started put gas in it couldn’t get it started when did the 30 seconds couldn’t get it started since then I have had my vehicle towed back and I’m dealing with voltage issues and I got a deck code coming up the b61676 any ideas what’s going on and why won’t the vehicle start
Hello Michael. The batteries would be the problem in this case. Non sufficient cold cranking amps will be the cause of it not kicking over. Good luck. You may want to check your alternator after having incorrect batteries installed in your rig.
I have 2008 Ford Explorer and last night when I was driving on freeway the track control light abs light and buzzing sound come on then radio when of all the lights fog lights and emergency flashers radio and door locks pup up and down didn’t work for a moment it happened a few times so this morning also abs was on now track control still on buzzer comes on. Got abs codes c1991 and b1676 battery voltage out of range I replace pcm alternator battery throttle body I don’t know what’s going on can you help dealership can’t find the problem