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P0718 code – Input/Turbine Speed Sensor Circuit Intermittent – Causes, Symptoms and How To Fix

When your vehicle’s check engine light beams brightly on the dashboard, among various codes that could pop up, one that often raises eyebrows is the P0718 code – Input/Turbine Speed Sensor Circuit Intermittent. This blog post unravels everything you need to know about the P0718 code—from its implications and symptoms to causes and solutions.

Key Takeaway

The P0718 code indicates an issue with the input or turbine speed sensor circuit in your vehicle. This problem is often intermittent, meaning it might not always trigger a check engine light but can lead to performance issues.

Understanding this code is essential for diagnosing transmission-related problems. Addressing the P0718 promptly can prevent further damage and costly repairs down the line.

Being aware of common symptoms helps you catch this issue early. Keep an eye out for unusual shifting patterns or stalling experiences while driving.

Whether you’re dealing with erratic gear shifts or facing poor acceleration, recognizing these signs allows for timely intervention. The sooner you act, the better chance you have of maintaining your vehicle’s overall health and efficiency.

What does the P0718 – Input/Turbine Speed Sensor Circuit Intermittent mean?

The P0718 code refers to a specific issue within the vehicle’s transmission system. It signals that there is an intermittent problem with the input or turbine speed sensor circuit. This sensor plays a crucial role in monitoring the rotational speed of the engine and transmitting this data to the vehicle’s computer.

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When it detects any inconsistencies, like voltage fluctuations or signal interruptions, it triggers this trouble code. Essentially, your car is struggling to get precise readings about how fast certain components are spinning.

This can lead to poor transmission performance, affecting everything from shifting gears smoothly to overall efficiency. Understanding what this code means helps drivers recognize potential problems before they escalate into major issues requiring extensive repairs.

What are the common symptoms of a P0718 code?

When your vehicle triggers a P0718 code, you might notice several telltale signs. One of the most common symptoms is erratic shifting. You may feel abrupt changes when the transmission shifts gears.

Another symptom to watch for is engine stalling or hesitation during acceleration. This can make driving unpredictable and frustrating.

Additionally, you might experience poor fuel economy. If you’re making more frequent stops at the gas station, it could be linked to this code.

Check your dashboard for warning lights like the check engine light illuminating consistently. Ignoring this signal could lead to further complications down the road.

Sluggish performance while driving often accompanies a P0718 code. Your vehicle may struggle with maintaining speed even on flat surfaces, indicating an underlying issue that needs immediate attention.

What causes a P0718 code?

Several factors can trigger a P0718 code. One of the primary causes is a faulty input or turbine speed sensor. This component measures the rotational speed of the transmission’s input shaft and sends this data to the engine control module (ECM). When it malfunctions, erratic readings occur.

Wiring issues are another common culprit. Damaged wires or poor connections create intermittent signals that confuse the ECM. Corrosion at connectors can also lead to communication failures.

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Additionally, fluid levels play a crucial role in proper function. Low transmission fluid or contaminated fluid may affect sensor performance, leading to erroneous codes.

Software glitches in the vehicle’s computer system can contribute as well. An outdated ECM might misinterpret valid signals from sensors, triggering unnecessary trouble codes like P0718 without any actual hardware failure involved.

How is a P0718 code diagnosed?

Diagnosing a P0718 code typically begins with scanning the vehicle’s onboard diagnostic system. A mechanic will connect an OBD-II scanner to identify stored trouble codes and any pending codes related to the transmission.

Next, they’ll inspect the Input/Turbine Speed Sensor visually. This involves checking for damaged wiring or loose connections that could disrupt signal transmission.

The technician may then perform resistance tests on the sensor itself. This helps determine if it operates within expected parameters.

Additionally, a road test can reveal how the vehicle behaves under various conditions. Observing shifts in performance can provide further insights into whether the issue is intermittent or consistent.

If necessary, more advanced diagnostics such as waveform analysis might be employed to monitor live data from the sensor while driving. Each step narrows down potential causes and guides effective troubleshooting strategies.

How do I fix a P0718 – Input/Turbine Speed Sensor Circuit Intermittent ?

To fix a P0718 code, start by inspecting the wiring and connectors associated with the input/turbine speed sensor. Look for any signs of wear or damage that might lead to an intermittent connection.

Next, ensure that the sensor itself is functioning properly. You may need to use a multimeter to check its resistance and output signals when the vehicle is running.

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If these components appear intact, consider checking your vehicle’s transmission fluid level and condition. Low or dirty fluid can affect sensor performance.

In some cases, re-flashing or updating your vehicle’s engine control module (ECM) software may resolve programming issues causing false codes.

If all else fails, replacing the input/turbine speed sensor could be necessary to eliminate persistent problems related to this code.

How much does it cost to fix a P0718 code?

The cost to fix a P0718 code can vary significantly depending on several factors, including the make and model of your vehicle, labor rates in your area, and whether you choose to go with OEM or aftermarket parts.

Typically, diagnosing the issue will run between $100 and $150 at most repair shops. If it turns out that you need to replace the input/turbine speed sensor itself, expect to pay anywhere from $50 to $200 for the part alone. Labor costs can add another $75 to $150 depending on how accessible the sensor is.

If there are additional issues found during diagnostics—like wiring problems or faulty connectors—the total repair bill could go up substantially. Always consider getting multiple quotes from mechanics before making a decision. Investing in proper repairs not only fixes the immediate problem but also prevents further complications down the road.