Skip the auto shop - Our mechanics make house calls

P2616 OBD-II Trouble Code: Camshaft Pos Signal Output Circuit High

Check Engine Light

P2616 code definition

If a vehicle’s PCM (Powertrain Control Module) stores a P216 code, it’s because the Camshaft Position (CMP) has released a high output signal.

What the P2616 code means

The engine of a modern vehicle wouldn’t work very well without a CMP. Camshafts are used to work the intake and exhaust valves. It, in turn, is driven by a crankshaft through a timing chain, timing belt or gears.

To figure out which cylinder is in its power stroke, the vehicle’s PCM keeps track of the rotating position of the camshaft and compares it to the position of the crankshaft thanks to the CMP. It then takes this information and adjust the spark timing as well as the operation of the fuel injectors. In this way, the CMP isn’t just essential to engine efficiency, control of emissions and fuel economy, but the vehicle even working in the first place.

If the CMP reports a waveform or voltage reading that is incorrect, the PCM will mark this with a P216 trouble code.

What causes the P2616 code?

The CMP measures camshaft operation with the help of electromagnetism. Yet, the most common reason for CMPs reporting incorrect readings is simply that oil – or some other engine fluid – has leaked and is now interrupting the sensor’s work.

Other common causes would be:

  • Faulty, broken or shorted wiring
  • Shorted electrical connectors
  • Fluid contamination
  • The CMS has become faulty

For the most part, though, an investigation should begin with looking for any leaks that may be getting in the way of the CMS reading its electromagnetic signal.

What are the symptoms of the P2616 code?

There are actually about five symptoms that could occur in conjunction with the P2616 code. Any combination of these could be present:

  • The engine lacks power
  • The vehicle doesn’t accelerate or does so, but choppily
  • The engine won’t start
  • The engine starts, but there is a noticeable delay
  • The engine’s performance is rough, even when idling

You should most likely see the check engine light come on too, but this isn’t always the case.

How does a mechanic diagnose the P2616 code?

As we mentioned above, a mechanic will definitely check for a leak, but that’s not the first step. Here’s the routine they’ll go through:

  • Use an OBD-II scanner to find out which codes the PCM has stored

  • Proceed to inspect the CMP for signs of a leak that is getting in the way of its ability to take readings

  • Check the wiring, connectors and other electrical components between the CMP and PCM

Usually, this will do the trick. The problem is almost always pretty obvious for an experienced mechanic.

Common mistakes when diagnosing the P2616 code

By the time a customer brings their vehicle in, the problem may have resolved itself if it was caused by some kind of fluid leak. However, that doesn’t mean it won’t come back, so the mechanic needs to be sure to look for such a leak and seal it up if necessary.

How serious is the P2616 code?

Although it’s not the kind of problem that would result in a crash, it can certainly be expensive to keep going on paying more than necessary at the pump. It will also be a very frustrating issue if the vehicle refuses to start.

What repairs can fix the P2616 code?

Some combination of the following will fix the P2616 code:

Additional comments for consideration regarding the P2616 code

Another mistake to avoid when it comes to the P2616 code is replacing the sensor with a much cheaper version simply because it saves money. That sensor is incredibly important to the operation of your vehicle. It doesn’t cost too much more to purchase an OEM component of high-quality.

Need help with a P2616 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...


Related questions

Q: My Mercedes Benz A-Class -160A start and dies

Wow! That's quite a list! It can be confusing when you get a whole library of codes like that.There are several things that can make that happen. One is if the car was operated with a dead battery. Another is...

Q: While driving my ABS and EPS dashboard lights come on. Can any mechanic service this or should I go to the dealership?

The ABS system has several components that it relies on to operate properly, both hydraulic and electrical. Any qualified technician can perform repair work on the system and I strongly suggest that one performs an inspection to prevent replacing unnecessary...

Q: 1999 firebird every now and then dies while driving and low engine power light comes on

A bad mass airflow (MAF) sensor can cause loss of power, no starts, and lean or rich conditions. If cleaning the sensor did not get rid of the P0102 trouble code, then replace the MAF sensor and clear the...