VSA Warning lights staying on

ASK:
About 4 times over the last couple of weeks, the two VSA warning lights (One says ‘VSA’ the other ‘!’) have come one and stayed on on My 2008 AWD EX. When I turn the car off, they reset and stay off until the proble crops up again. They always come on while I am driving.

I took it to the dealer who read the codes and said that the only code was a battery code, and that the problem must have been a low battery. They charged the battery and sent me on my way. Unfortunately, that problem doesn’t make a bit of sense to me. If it was a low battery, the problem would have happened when I first started the car, not when I was driving and the alternator should have been powering the car.

Does anyone know of any issues that can cause this problem?

Answer:
Sounds like the dealer did not give you the entire definition of the DTC that was stored.

There is no “battery” code, but there are codes that can store related to the available voltage to the module that set the DTC (voltage HIGH / voltage LOW). Typically, if a low voltage state occurs at the battery, multiple modules (VSA, ABS, SRS, etc…) will set low voltage DTCs.

When only one module sets a voltage-related trouble code, it is most likely that the fault is either in the specific power and ground circuits to that particular module, or the module itself is faulty.

When these types of faults are intermittant, they are virtually impossible to “diagnose”.

The printed diagnostics for these DTCs will instruct the technician to clear the code, and if the code does not reset, the technician is instructed to review the diagnostics for trouble-shooting intermitant problems.

This trouble-shooting involves accessing and testing all related connectors, driving the vehicle over various road surfaces and/or wiggling the related harnesses in an attempt to duplicate the concern.

There are VERY FEW technicians who will take the time (their OWN time, as they will not be paid unless they find a problem) to persue intermittant electrical problems.

If the vehicle has had any collision repair, or any after-market electrical accessories piggy-backed in to the vehicle’s wiring harness, those areas would be suspect, and the harnesses related to the VSA system would need to be inspected for damage / tampering. If the vehicle is stock and has had no repairs prior, the connectors (specifically individual terminals) for the VSA power and ground circuits would need to be inspected for soft-set conditions or insufficient terminal contact. If a fault is still not found, then it’ll likely be the module, or in rarer cases, internal to a fuse panel or ignition switch.

What is a vsa on honda accord?
Answer:
Vehicle Stability Assistance – It works with the ABS on the front wheel drive Accord to help keep your car on the road. Simply put, if your car starts to slide around a curve or if you oversteer, the VSA “kicks in” and the brakes apply to the tire with less traction and the vehicle with more traction gets the additional torque. I’m a first time Accord owner and have been extremely pleased by this feature. The first time I experienced it, I took a curve too quickly on wet leaves. It felt like I should have slid off of the road but the VSA engaged and I smoothly finished my turn with only a few inches of lateral slide. I don’t think I’d get a car without it!

In my case, on the road I hit some thing like a carton but sound strong, as nothing happens we keep going, but 15 min later in a sudden turn I felt like slip, but instantaneously (as in the above case the brakes apply to the tire with less traction ) I felt good, the yellow sign VSA turns On and I keep my way, later on my arrival 30 min after the hit, we realize there was a flat tire, the Right rear. So my advice when this alert happens, stop and check your tires, maybe you have a puncture also.

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