Camshaft Position Sensor: P0340, P0341 Service Dept says moisture damage multiple times?

[TheBard74]

2014 Ford Fusion Hybrid Titanium

28,000 miles

 

I've been getting P0340 and P0341 codes multiple times in the past 6 months.

I've taken it into the local Ford service shop three times total now, twice in the last month.

Each time they've replaced the camshaft position sensor, and have told me the problem is that the sensor went bad due to condensation buildup. Their solution was that I should drive it more often for longer a duration so the engine runs more and so condensation doesn't build up. Or run with defrost on so the engine runs more, again to reduce condensation.

 

That sounds like a terrible excuse to me. My driving habits haven't changed in the 4 years I've owned the car, so why would condensation just now start to be a problem? The service dept says they've run multiple diagnostic tests and don't find any other problems, just the camshaft position sensor going bad due to moisture/condensation damage.

[ethermion]

Well, the codes just mean that the CPU is getting odd data from the cam position sensor. It doesn't mean the sensor is bad. Codes are clues, not truths.

 

Smells like a bad dealer to me.

 

Never heard of this. Hopefully somebody else will chime in.

[TheBard74]

They say the sensor is corroded, thus the reason for the error codes. But I keep asking them why does it keep getting corroded, and they say condensation from the engine not running. No answer to why I haven't had this problem in any of the previous years of ownership.

[TheBard74]

On Tuesday they said car is done, code fixed etc. I pick up my car about 4pm, drive to the store less than a mile away. As I'm driving I can hear the higher RPMs of the engine which I've come to attribute as a warning sign to the camshaft problem. Sure enough as I'm leaving the store, check engine light comes on... less than 30min from leaving the dealership.

 

So obviously I take it back immediately and tell them I'm not happy. Clearly the camshaft sensor is not the problem, or they didn't actually do a darn thing when it was in there. I know for a fact they didn't drive it anywhere because I reset the Trip 1 reading. Getting pretty frustrated here.

[lolder]

This is all BS from this dealer. Try to take it somewhere else. This car is designed for the engine not to run a lot.

[TheBard74]

New updates.

Area on the camshaft where the sensor reads is rusty, so Ford is advising to replace the camshaft. They still say rust is coming from the moisture that accumulates from cold weather and not running the engine for a long enough duration at a time.

But even before replacing the camshaft, now they're having problems even getting the car to start. Electronics aren't communicating now or something.

They've sent multiple diagnostic readouts and meter readings to Ford for them to review and send back some answers as to what's going on.

 

As soon as they get this running I'm selling it. Only 28,000 miles, I shouldn't be having problems like this.

 

Edit:

Computer is toast, which is why the car won't start. Dealer is ordering a new PCM, which should let the car start. Previously readings from the cam sensor had 2 glitches about every 3 seconds like clockwork. So they're thinking maybe the computer was glitching out causing the weird readings. So remains to be seen if the glitches will still happen after they get a new PCM installed. If glitches go away, then PCM was the underlying problem. If glitches remain, then they'll probably replace the camshaft since it was rusty.

 

Edit2:

So they put in a new computer, still had bad readings. Problem ended up being a bad camshaft position sensor. The sensor was affecting voltage on the computer, causing it to do weird things. They replaced the position sensor, and now everything is reading perfectly. They probably didn't need to replace the computer, but too late now since they already did. Said car is ready to be picked up. They said they drove it a bit and everything seems perfectly normal, so we'll see how that goes once I pick it up.

Edited April 25, 2018 by TheBard74

[Maickel]

On 4/19/2018 at 4:29 PM, TheBard74 said:

Novas atualizações.

A área na árvore de cames onde o sensor indica está enferrujada, por isso a Ford recomenda substituir a árvore de cames. Eles ainda dizem que a ferrugem vem da umidade que se acumula com o tempo frio e não faz o motor funcionar por um período longo o suficiente de cada vez.

Mas antes mesmo de substituir o eixo de comando, agora eles estão tendo problemas até mesmo para fazer o carro dar a partida. A eletrônica não está se comunicando agora ou algo assim.

Eles enviaram várias leituras de diagnóstico e leituras de medidores para a Ford para que eles revisassem e enviassem algumas respostas sobre o que está acontecendo.

 

Assim que começarem a rodar, estou vendendo. Apenas 28.000 milhas, eu não deveria ter problemas como este.

 

Editar:

O computador está acabado, e é por isso que o carro não pega. O revendedor está encomendando um novo PCM, que deve permitir a partida do carro. Anteriormente, as leituras do sensor de came apresentavam 2 falhas a cada 3 segundos, como um relógio. Eles estão pensando que talvez o computador esteja com problemas, causando as leituras estranhas. Portanto, resta saber se as falhas ainda ocorrerão após a instalação de um novo PCM. Se as falhas desaparecerem, o PCM será o problema subjacente. Se as falhas permanecerem, provavelmente substituirão a árvore de cames, uma vez que estava enferrujada.

 

Edit2:

Então eles instalaram um novo computador, ainda tinha leituras ruins. O problema acabou sendo um sensor de posição do eixo de comando defeituoso. O sensor estava afetando a voltagem do computador, fazendo com que ele fizesse coisas estranhas. Eles substituíram o sensor de posição e agora tudo está lendo perfeitamente. Eles provavelmente não precisaram substituir o computador, mas agora é tarde demais, pois já o fizeram. O referido carro está pronto para ser retirado. Eles disseram que dirigiram um pouco e tudo parece perfeitamente normal, então veremos como vai correr assim que eu pegar o carro.

 

Hello TheBard74, I have the same problem for over a year. I've taken the car at ford many times and can't figure out this problem. Could it be that condensation is spoiling the cmp sensor? It is a plastic sensor on the outside, it does not corrode, perhaps because of the condensation, the computer sends a lot of energy and burns the sensor.
How is your car at the moment?

[BMorse]

I'm having this issue now.  Just under 48,000 miles, and I started a new job 7 months ago that's about 5 miles from my home.

 

Took it to a mechanic who eventually replaced the Camshaft Position Sensor.  Drove fine for a few weeks and the error codes started up again.  If my short drives are the cause, then what can I do to prevent this?  The car seems to drive fine otherwise, but I sometimes think the engine is revving louder than usual, but it could be I'm just hyper-aware of it with this problem and I don't have music on so I can hear it.

 

Codes are:

P0340 Generic, Current, Camshaft Position Sensor A Circuit Bank 1 or Single Sensor

P0340 Generic, Pending, Camshaft Position Sensor A Circuit Bank 1 or Single Sensor

P0340 Generic, Permanent, Camshaft Position Sensor A Circuit Bank 1 or Single Sensor

P0344 Generic, Current, Camshaft Position Sensor A Circuit Intermittent Bank 1 or Single Sensor

P0344 Generic, Pending, Camshaft Position Sensor A Circuit Bank 1 or Single Sensor

P0344 Generic, Permanent, Camshaft Position Sensor A Circuit Bank 1 or Single Sensor