If your vehicle is showing the engine code P0A08, you are likely dealing with a DC/DC converter status circuit that isn’t functioning or is experiencing a fault. You should get this checked out and fixed by a qualified and trusted mechanic as soon as possible.

Diagnostic trouble codes (DTCs) can help you specifically determine your vehicle’s engine issue. With an OBD-II Code reader, you can determine your engine’s issue before taking the vehicle into the shop, thus making finding the solution to the problem much easier.

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What does the engine code P0A08 mean?

Definition: DC/DC Converter Status Circuit

The P0A08 code indicates a problem with your DC/DC converter status circuit, which sends a signal to your vehicle’s powertrain control module (PCM) when the auxiliary battery voltage is low (and your engine isn’t starting).

How much will it cost to fix?

Ultimately, the cost to fix a faulty DC/DC converter status circuit will depend on the make and model of your vehicle, as well as the engine type. Fixing this issue will likely take an hour, with rates ranging from between $75 to $150 per hour.

MORE: How can I reduce the costs of car maintenance?

What can cause the P0A08 engine code?

If engine code P080A shows up, this means your DC/DC converter status circuit either isn’t functioning or is functioning with a fault that needs to be repaired. There are several common reasons for this circuit to malfunction:

The DC/DC converter is faulty

The DC/DC converter harness is open or shorted

The DC/DC converter has a poor electrical connection

Your vehicle’s powertrain control module is faulty

Common symptoms of the P0A08 engine code

The most common symptom of P0A08 are two that you will likely notice:

Engine won’t start

Engine stalls

Otherwise, your

check engine light being illuminated

could indicate a problem with your DC/DC converter status circuit, as well as a host of other engine problems. Bottom line—if this light is on, get your engine checked out.

How serious is the P0A08 engine code?

If you are reading engine code P0A08, the problem is likely a serious one, especially if your engine won’t start or is stalling. Even if that isn't the case, seeing this engine code means it is a good idea to take your car to a qualified and trusted mechanic for an inspection, diagnosis, and repair of any problem.

Can I fix the P0A08 engine code myself?

If you are handy and know your way around an engine bay, you may feel up to at least taking a look to see if you can handle fixing this issue. At first, do the following:

Visually inspect any related connectors and wiring harness

Look for any broken, pushed-out, or bent components

Check for corroded connector pins

Even if you can diagnose this problem, it is always a good idea to let a trusted and qualified mechanic repair the issue to ensure it's done correctly.

MORE: What does the check engine light mean?

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