The P0659 OBD-II code is an indicator of an issue within the actuator supply voltage “A” circuit. This code is classified as urgent, meaning that it requires immediate attention to prevent severe damage to your vehicle or potential harm to occupants.
What Does the P0659 Code Mean?
Specifically, the P0659 code points to a problem where the engine control module (PCM) detects a high voltage signal from the actuator circuit. This can affect the transmission’s ability to engage and hold gears properly.
What Causes the P0659 Code?
Several factors can trigger the P0659 code, including:
- Internal transmission failure
- Powertrain Control Module (PCM) failure
- Transmission actuator failure
- Transmission Control Module (TCM) failure
- Wiring issues leading to incorrect signals
What Are the Symptoms of the P0659 Code?
Drivers may experience the following symptoms when the P0659 code is present:
- Transmission may not shift properly
- Unusual transmission behavior
- Check Engine light illuminated
How Serious Is the P0659 Code?
The P0659 code is considered serious. It can lead to significant transmission issues, which can escalate into costly repairs if not addressed promptly. Furthermore, it poses safety risks while driving due to unpredictable transmission behavior.
How to Diagnose the P0659 Code
Diagnosing the P0659 code requires a systematic approach:
- Use an OBD-II scanner to confirm the presence of the P0659 code.
- Inspect the wiring and connectors associated with the actuator circuit for damage or corrosion.
- Check the voltage output from the actuator; it should be within the manufacturer’s specifications.
- Test the PCM and TCM for faults, as they may be contributing to the issue.
- Conduct further tests on the transmission actuators to ensure they are functioning correctly.
Common Repairs for the P0659 Code
Repairs for the P0659 code may include:
- Replacing defective transmission actuators
- Repairing or replacing damaged wiring or connectors
- Replacing the PCM or TCM if found faulty
- Addressing any internal transmission failures if diagnosed
How Much Does It Cost to Fix the P0659 Code?
The cost of fixing the P0659 code can vary widely based on the underlying issue. Simple repairs, like wiring fixes, may cost a few hundred dollars, while replacing a PCM or TCM could range from $500 to $1500 or more, depending on the vehicle and labor costs.
Can I Fix the P0659 Code Myself?
While some DIY enthusiasts may attempt to fix the P0659 code themselves, it’s crucial to have a clear understanding of automotive systems and proper diagnostic tools. If you are not confident in your skills, it is highly recommended to seek professional help to ensure that the issue is resolved correctly.
