What this code means
P0562 may indicate that the AWD module is seeing system voltage lower than expected on its voltage supply input.
What the vehicle may do
- The vehicle may store the code with no obvious symptom.
- Four-wheel-drive or transfer-case operation may be intermittent or limited.
- Electrical or module communication behavior may seem inconsistent when voltage supply is unstable.
Possible fault areas
- Possible vehicle-level voltage concern
- Possible AWD module voltage supply concern
- Possible AWD module ground concern
- Possible wiring, connector, or terminal concern
- Possible AWD module concern
Diagnostic path
Opening and code meaning
On this 2011-2025 Ford F-250 Super Duty with the 6.7 Power Stroke diesel, P0562 is a low system voltage fault seen by the AWD module. In plain terms, the module may not be seeing the voltage it needs to operate correctly. The truck may have four-wheel-drive or transfer-case related complaints, intermittent operation, or it may simply store the code. Broadly, this can be a vehicle-level voltage concern, a possible AWD module power feed issue, a possible ground issue, circuit problems around the module and driveline control circuits, or the module itself. For this target code, the AWD module sets P0562 when it detects battery voltage below 9 volts on the voltage supply input circuit.
Start with the vehicle-level voltage check
Start with the basic system checks, then follow a structured diagnostic approach. Turn the ignition on, connect the scan tool, retrieve continuous memory DTCs, and see whether voltage-related faults are also stored in other modules. If other modules are also showing voltage faults, do not stay inside the AWD module test yet. Move to charging system diagnosis for the applicable engine. If the voltage concern is only showing up here, continue with the AWD module checks.
Check AWD module power
Next, check the AWD module power feed. Turn the ignition off, disconnect AWD Module C2371A and C2371B, then turn the ignition on. Measure voltage between AWD Module C2371B Pin 1 and AWD Module C2371A Pin 9. You are looking for voltage greater than 10V, and it needs to stay constant while you wiggle test the harness. If it passes, move on to the ground check. If it does not pass, verify BCMC fuse 13 (30A) and fuse 52 (10A) are okay. If the fuses are okay, repair the open circuit or short to power. If a fuse is not okay, trace the circuit short using the correct vehicle wiring information, then clear all CMDTCs.
Check AWD module ground
With the ignition off, check the AWD module ground at AWD Module C2371B Pin 3. The resistance needs to be less than 3 ohms. If it is, continue to the circuit short-to-voltage checks. If it is not, repair the circuit and make sure the ground fastener is secure.
Check the related circuits for short to voltage
Now check the RELD+, TCSCC+, TCMC+, and TCMC- circuits for a short to voltage. With the ignition off, disconnect Rear ELD C4359 and Transfer Case C350. Inspect the connectors, including any inline connectors, for water or damage. Make sure the terminals are not splayed, damaged, or pushed out of the connector. Then turn the ignition on and measure voltage at Electronic Locking Differential Field Coil C4359 Pin 1, Transfer Case Assembly C350 Pin 2, Transfer Case Assembly C350 Pin 3, and Transfer Case Assembly C350 Pin 4. If any voltage is present, repair the circuit. If no voltage is present, continue to the short-to-ground check. Where exact meter reference placement is not fully shown in the test path, pause and use the correct connector and circuit information. Do not guess at a reference point.
Check the related circuits for short to ground
For the short-to-ground check, turn the ignition off and disconnect AWD Module C2371A and C2371B. Again, inspect all connectors, including inline connectors, for water, damage, splayed terminals, damaged terminals, or terminals pushed out of the connector. Measure resistance at AWD Module C2371A Pin 6, AWD Module C2371A Pin 4, AWD Module C2371B Pin 4, and AWD Module C2371B Pin 2. The resistance should be greater than 10,000 ohms. If it is, move to verification. If it is not, repair the circuit. If the meter setup is unclear at any point, stop and recheck the earlier diagnostic path and the correct circuit information rather than guessing.
Verify the repair and confirm the code stays gone
Keep verification separate from the circuit testing. Reconnect AWD Module C2371A and C2371B, reconnect Rear ELD C4359, and reconnect Transfer Case C350. Turn the ignition on, connect the scan tool, and clear CMDTCs. Turn the ignition off, open and close the driver door to start module shutdown, and wait 1 minute for the AWD module to sleep. Then start the engine, let it idle for 1 minute, and retrieve CMDTCs again. If the voltage or internal fault sets again, check OASIS for any applicable TSB, GSB, SSM, or FSA. If one applies, stop this test and follow that guidance. If none applies, install a new AWD module. If the code does not set again, the system is operating correctly at this time. The concern may have been caused by module connections, a loose connector, or corrosion, so address the root cause of any connector or pin issue you found.
Takeaway
Takeaway: do not condemn the AWD module until you have separated a vehicle-level voltage problem from module power, module ground, and the controlled circuits around it. Prove the basics, check the connectors closely, then verify the code stays gone. For more diagnostic training, visit stepdiagnostics.com.
Final check
P0562 often needs a voltage-first diagnostic approach: confirm whether the concern is vehicle-wide, then prove AWD module power, ground, related circuits, and final verification.
For more guided automotive diagnostics, visit STEP Diagnostics.
