Mercedes Gear Selector Fault Causing P1856 And P240C

Have you got P1856 or P240C stored in your Mercedes and find it just won’t change gear? The cause of this is a faulty gear selector, a common weakness in models built between 2000 and 2014 leading to issues with both gear selection and the PRNDS display.

Shop Now - Remanufacture My Mercedes Gear Selector

Fitted to the Mercedes W203 C-Class, W209 CLK and W211 E-Class models, this gear selector commonly suffers from internal degradation of the unit, leaving you with the aforementioned symptoms and fault codes P1856 and P240C.

We can help with this. Our expert team will rebuild your gear selector in just 2-3 working days days, and better yet, every remanufactured unit comes with an unlimited-mile lifetime warranty included. Fill out our quick test form today to get started.

What causes P1856 and P240C to store in my Mercedes?

As you’ll have found, P1856 and P240C materialise when the gear selector inside of your Mercedes develops an internal fault. This causes a mismatch in the gear position signal, which, when not aligned with a valid gear position, causes the transmission control module to flag this as a major problem:

• P1856 - Selector Lever Position Detection Has Failed
• P240C - CAN Signal Selector Lever Position N15/5 Implausible

The code P240C is logged in your Mercedes as an 'implausible signal' meaning that the data is missing, out of range or conflicting with other system inputs. P1856, however, indicates that your Mercedes is receiving no signal at all from the gear selector.

As both codes stem from the same internal defect, they often appear together. Once the module fails, clearing the codes will not resolve the problem, they will continue to return until the selector lever module is rebuilt.

How to resolve Mercedes P1856 and P240C

The only effective and long-term solution for your faulty gear selector is to have the module professionally rebuilt. Our dedicated team of expert technicians are specialists in this. This means that the internal defect within your Mercedes will not only be resolved, but prevented from reoccurring.

Every rebuild we complete includes the replacement of weak components with higher-than-OEM-specification parts, so your Mercedes’ P1856 and P240C fault codes will be gone for good. It couldn't be easier, simply refit and go without the faff of having to reprogramme the rebuilt unit.

Once rebuilt, the gear selector will operate as intended, permanently clearing P1856 and P240C from your Mercedes W203, W209 or W211.

Our Mercedes P1856 and P240C solution

Our bespoke service is more effective than sourcing a brand-new or second-hand gear selector, as replacement units will come with the same weaknesses that caused the original fault.

To give you complete peace of mind, we even offer a 2-3 working days turnaround along with an unlimited-mile lifetime warranty on every rebuild. Fill out our quick-and-simple test form now to get started.

Common failure symptoms:

• No engine start
• Gear lever stuck in park or gear
• Missing or incorrect gear display
• Limp-home mode active

Common fault codes:

• P1856 – Selector lever position not plausible
• P240C – Can Signal Selector Level Position N15/5 Implausible (common in Mercedes W203)

Test and rebuild:

We test gear selector levers on state-of-the-art testing rigs. This allows us to analyse your failure symptoms whilst simulating real-world driving conditions to confirm whether a defect is present. We’ll then confirm whether you wish to go ahead with the rebuild, and if you do, we’ll waive the testing fee.

Programming:

Once your gear selector has been comprehensively rebuilt, you won’t even need to recode it back to your vehicle either. All coding information previously stored in your module when you sent it to us is retained throughout our process.

Quality:

Long-lasting quality is always the priority of our work, which is why we only use top-grade components and cover you with a lifetime warranty. Thanks to a company-wide commitment to continuous improvement and the very latest state-of-the-art remanufacturing equipment, our defect rate is currently as low as 0.49%.

Warranty:

*Lifetime unlimited mileage.

How do I get my unit rebuilt?

To pay for the rebuild, click the Shop Now link above, select your part number, and click: Get yours rebuilt.

Print the payment/booking confirmation email.

Package the control module inside a sturdy box with plenty of packaging material (make sure you include your confirmation email in the box.)

Send us your package by tracked courier (the shipping instructions are in the confirmation email.)

Once received, we will test, rebuild, and return your module with an unlimited mileage lifetime warranty. (If your unit turns out not to be faulty, then we will refund your payment, less a small testing fee and return shipping.)

What if I don’t want to pay up front?

This is not a problem. If you prefer this option, then follow these steps:

Fill in and submit this test form.

Print the booking confirmation email.

Package the selector lever inside a sturdy box with plenty of packaging material (make sure you include your confirmation email in the box).

Send us your package by tracked courier (the shipping instructions are in the confirmation email).

Once received, we will test your selector lever and call you to advise on the outcome of testing. If your control module is faulty and you choose to go ahead with the rebuild, then we will take payment over the phone using a debit/credit card.

We will then rebuild your ECU and return it to you with an unlimited mileage warranty.

If you require further information regarding this Mercedes gear selector, please contact us.