Car loses power, eventually stalls.. Fault code P06A7 keeps coming back

[rogier]

Hi everyone!

I am looking for some help with my 2015 Mustang Ecoboost. It has about 65k miles on it and I've owned it for 2 years now.

A couple of weeks ago while driving, I suddenly lost a lot of power (I guess limp mode? Car wouldn't go above 45 mph) and I got a "See Manual" notification.

I let the car sit overnight and the next morning it would start fine and no problems or notifications. After about 30 minutes of driving, the same issue popped up again, but this time I lost all power and I also couldn't get the car to start again. Check engine light also came on.

The fault code that keeps coming back is "P06A7 — sensor reference voltage “B” circuit/performance range". That's a pretty generic code obviously..

My mechanic thought it was a faulty gas pedal and the gas pedal was replaced with a new one. Unfortunately that didn't fix the problem :(

It looks like the issue surfaces quicker when the car has been driving for a while or when it's a hot day outside..

Any ideas?

Sponsored

 

[DougS550]

Hi everyone!

I am looking for some help with my 2015 Mustang Ecoboost. It has about 65k miles on it and I've owned it for 2 years now.

A couple of weeks ago while driving, I suddenly lost a lot of power (I guess limp mode? Car wouldn't go above 45 mph) and I got a "See Manual" notification.

I let the car sit overnight and the next morning it would start fine and no problems or notifications. After about 30 minutes of driving, the same issue popped up again, but this time I lost all power and I also couldn't get the car to start again. Check engine light also came on.

The fault code that keeps coming back is "P06A7 — sensor reference voltage “B” circuit/performance range". That's a pretty generic code obviously..

My mechanic thought it was a faulty gas pedal and the gas pedal was replaced with a new one. Unfortunately that didn't fix the problem :(

It looks like the issue surfaces quicker when the car has been driving for a while or when it's a hot day outside..

Any ideas?

That is one generic ass fault code. List all the mods as well as after market tune. I guess you checked the PCM fuse and general wiring?. Do you have a OBDII scanner which can do test on the sensors as well as perform other diagnostic test?. Good Luck

 

[rogier]

Thanks for your reply!

I realise the fault code is very generic, unfortunately I don't have the complete list (car is at the mechanic). I do know of one other fault code that sometimes poppd up, but not all the time, was P0098 IAT Sensor 2 Circuit High.

Car has no mods or tune on it.

 

[MrMike]

Do you mean that he replaced the pedal position sensor, not the pedal itself?

Honestly, if the car is at the mechanic, let him cook. While a good chunk of people here are very knowledgeable, most pros don't like to be backseat driven by random people on the internet.

P0098 can be something as simple as a dirty MAF or a sensor plugged in wrong. I'd investigate all intake sensors and the throttle body.

My gut is you have a damaged/shorted wire or bad sensor that's interrupting signal to the other sensors on the circuit. I would expect this to have other codes with it, though.

 

[rogier]

Do you mean that he replaced the pedal position sensor, not the pedal itself?

He replaced the pedal itself with a new one. I'm not technical at all myself, but I'll try to explain what he did. He checked the sensor and it should have 2 values, but 1 kept returning zero. After cooling the sensor/pedal, the value went up and the car would start again and we were able to drive for a little bit. He said that meant that the sensor was faulty in the pedal.

Honestly, if the car is at the mechanic, let him cook. While a good chunk of people here are very knowledgeable, most pros don't like to be backseat driven by random people on the internet.

Yeah, you're right.. I'm just trying to not lose too much money over this. But I'll let him cook ;)

P0098 can be something as simple as a dirty MAF or a sensor plugged in wrong. I'd investigate all intake sensors and the throttle body.

My gut is you have a damaged/shorted wire or bad sensor that's interrupting signal to the other sensors on the circuit. I would expect this to have other codes with it, though.

Thanks, will look into this! It's definitely throwing other codes as well, but unfortunately I don't have the entire list at the moment

 

[MrMike]

He replaced the pedal itself with a new one. I'm not technical at all myself, but I'll try to explain what he did. He checked the sensor and it should have 2 values, but 1 kept returning zero. After cooling the sensor/pedal, the value went up and the car would start again and we were able to drive for a little bit. He said that meant that the sensor was faulty in the pedal.

Got it, yes, the rear portion of the entire assembly contains the pedal sensor.

Yeah, you're right.. I'm just trying to not lose too much money over this. But I'll let him cook ;)



Thanks, will look into this! It's definitely throwing other codes as well, but unfortunately I don't have the entire list at the moment

That's good news that the car is throwing other codes. The P06A7 is a vague, general code and there should be codes for the associated sensors. As long as there are other sensor codes, there is something to go on.

 

[DougS550]

Thanks for your reply!

I realise the fault code is very generic, unfortunately I don't have the complete list (car is at the mechanic). I do know of one other fault code that sometimes poppd up, but not all the time, was P0098 IAT Sensor 2 Circuit High.

Car has no mods or tune on it.

To me the generic code was just telling you something is wrong with a sensor. The P0098 is the one telling you the fault area. I would OHM, inspect wires, connector, but replace the IAT sensor for that is the main fault, They are cheap, reset fault codes and see how it drives. Good Luck

Sponsored