EN / RU / ES / FR / DE

OBDII/EOBD diagnostics trouble codes definition

If your car is equipped with OBD-II or EOBD, you can access over 5,000 generic OBD-II diagnostic trouble codes (DTCs). These codes cover various vehicle systems, including Powertrain (P0XXX, P2XXX, P34XX), Body (B0XXX), Chassis (C0XXX), and Network/Communication (U0XXX, U2XXX, U3XXX). Additionally, there are more than 13,500 manufacturer-specific OBD-II codes available for diagnosing issues unique to different car brands and models. Make sure you're equipped with the right tools to understand and resolve these trouble codes to keep your vehicle running smoothly.

By using these OBD-II codes, you can effectively diagnose issues related to engine performance, safety features, suspension, and more.

Supported manufacturers with specific OBD2 codes:

Enter code:
+
P
-
+
0
-
+
0
-
+
0
-
+
0
-


Detailed Description of Error P0718

OBDII error code P0718 is a generic trouble code that indicates an issue with the Input/Turbine Speed Sensor "A" Circuit. This sensor is responsible for monitoring the speed of the turbine in the transmission, which is essential for proper gear shifting and torque converter engagement. The "A" circuit refers to the primary circuit of the sensor. When the powertrain control module (PCM) detects an intermittent fault in this circuit, it sets the P0718 code.

The Input/Turbine Speed Sensor is usually located on the transmission and is connected to the PCM via an electrical circuit. The sensor generates a signal that is proportional to the turbine speed, which the PCM uses to determine the correct gear ratio and torque converter engagement. If the PCM detects an intermittent fault in the circuit, it may cause erratic shifting, slipping, or hesitation, which can lead to decreased performance, reduced fuel efficiency, and even transmission damage.

Possible Causes of Error P0718

  • Wiring or connector issues in the Input/Turbine Speed Sensor circuit
  • Corrosion or water damage in the sensor or its electrical connections
  • Faulty or damaged Input/Turbine Speed Sensor
  • PCM malfunction or software issue
  • Transmission internal mechanical failure, such as a faulty turbine or bearing
  • Low battery voltage or electrical system malfunction
  • Aftermarket accessories or modifications interfering with the sensor circuit

Possible Fixes for Error P0718

  1. Inspect the wiring and connectors in the Input/Turbine Speed Sensor circuit for damage, corrosion, or wear. Repair or replace as necessary.
  2. Check the sensor and its electrical connections for signs of water damage or corrosion. Clean or replace as necessary.
  3. Replace the Input/Turbine Speed Sensor if it''s faulty or damaged.
  4. Update the PCM software or reflash the module if a software issue is suspected.
  5. Perform a transmission internal inspection to identify any mechanical failures.
  6. Check the battery voltage and electrical system to ensure proper function.
  7. Remove any aftermarket accessories or modifications that may be interfering with the sensor circuit.
Can't find the right OBDII code in the catalog? Get professional advice from our smart assistant and find out the exact cause of the problem today!

Chat