|Trouble Code||Fault Location||Probable Cause|
|P0658||Actuator supply voltage -circuit low||Wiring short to earth, actuator|
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What Does Code P0658 Mean?
When I find a stored P0658 code, it means that the powertrain control module (PCM) has detected a low supply voltage condition in the circuit for a particular actuator. The actuator in question is typically associated with the automatic transmission, transfer case, or one of the differentials. Consult All Data DIY to determine the actuator location and function as it relates to your vehicle.
Battery voltage is usually supplied to the actuator in question via a fused, switched circuit. The PCM sends a ground signal to the actuator in order to complete the circuit and accomplish a programmed function. When the actuator circuit is completed (as the PCM commands) it provides the PCM with an input voltage signal. If this input voltage signal is not received by the PCM, a P0658 will be stored and a malfunction indicator lamp (MIL) may be illuminated. Some vehicles will require multiple drive cycles (with a failure) for a MIL to be illuminated.
What are the common causes of code P0658 ?
- Defective or blown fuses and fusible links
- Faulty system power relay
- Bad actuator
- Open or shorted circuits and/or connectors
What are the symptoms of code P0658 ?
- Transmission shifting malfunctions
- Delayed (or no) transmission engagement
- Failure of the transmission to switch between all-wheel and two-wheel drive modes
- Failure of the transmission to shift between sport and economy modes
- Failure of the transfer case to shift from low to high gear
- Lack of front differential engagement
- Lack of front hub engagement
How do you troubleshoot code P0658 ?
Most technicians use a suitable diagnostic scanner, a digital volt/ohmmeter, and information located on All Data DIY to successfully diagnose a code P0658.
Use your vehicle information source to determine the location and function of the actuator in question, as it relates to your particular vehicle. Check system fuses and fusible links with the circuit under a full load. Fuses that may appear normal when there is very little load on the circuit often fail when the circuit is fully loaded with resistance. Blown fuses should be replaced, keeping in mind that a shorted circuit is likely the cause. Perform a visual inspection of actuator system related wiring harnesses and connectors. Repair or replace damaged or burned components as required.
Connect the scanner to the vehicle diagnostic connector and retrieve all stored trouble codes. Write them down, along with related freeze frame data, as this information may prove helpful if the code turns out to be intermittent. Go ahead and clear the code and test drive the vehicle to see if it is immediately reset.
If all system fuses are intact and the code is immediately reset, use the DVOM to test voltage and ground signals at the actuator in question. Typically, you should expect to find battery voltage and a common ground at the actuator connector.
If the voltage and ground are present on the actuator connector, test actuator resistance and continuity and compare your findings to manufacturer’s specifications. Actuators that fail to comply with these specs must be replaced.
If there is no voltage signal at the actuator, disconnect all related controllers and use the DVOM to check circuit resistance and continuity between the actuator and the relay or fuse. Replace open or shorted circuits as required.
Codes Related to P0658
- P0657 Actuator Supply Voltage A Circuit/Open
- P0659 Actuator Supply Voltage A Circuit High
- P0700 Transmission Control System Malfunction
- P0701 Transmission Control System Range/Performance
- P0702 Transmission Control System Electrical
- P0836 Four Wheel Drive (4WD) Switch Circuit
- P0837 Four Wheel Drive (4WD) Switch Circuit Range/Performance
- P0838 Four Wheel Drive (4WD) Switch Circuit Low
- P0839 Four Wheel Drive (4WD) Switch Circuit High
- Any one of many other transmission, transfer case, traction control, or anti lock brake related codes