Code
P0560
GWM
P — Powertrain
- The system voltage is incorrectly adjusted
Views:
UK: 21
EN: 28
RU: 23
AI status
Completed
Completed
100%
Causes
- Weak or failing battery (low state of charge or high internal resistance)
- Faulty alternator or voltage regulator
- Loose, corroded or damaged battery cables and terminals
- Poor or missing ground connections (engine or chassis grounds)
- High resistance or open in charging/ignition power feed to the ECU
- Parasitic electrical load or short circuit
Symptoms
- Battery warning light or charging warning lamp illuminated
- Intermittent or dimming headlights and interior lights
- Hard starting or no-crank/no-start conditions
- Electrical accessories operate erratically
- Possible engine stalling or drivability issues when voltage is out of range
- Stored DTCs related to charging, battery, or ECU power
What to check
- Read and record all stored codes and freeze-frame data with a scan tool
- Measure battery resting voltage (key off), cranking voltage, and charging voltage (engine running)
- Perform a battery conductance or load test
- Inspect battery terminals, cable ends and main power/ground connections for tightness and corrosion
- Measure voltage at alternator output and voltage sense terminal
- Check alternator belt condition and tension
Signal parameters
- Key OFF battery voltage: ~12.4–12.8 V (manufacturer dependent)
- Cranking voltage: should typically remain above ~9–10 V during cranking
- Charging voltage (idle/run): commonly ~13.5–14.8 V; sustained voltages 15.5–16 V may set codes
- Voltage fluctuations or spikes outside normal operating band can trigger P0560
- Manufacturer-specific voltage thresholds and detection times may apply — check GWM service data
Diagnostic algorithm
- Retrieve P0560 and any related codes (P0562/P0563/etc.) plus freeze-frame and freeze data using a capable scan tool.
- Visually inspect battery, terminals, cable routing and main grounds. Clean and tighten as required.
- Measure and record battery voltage at rest. If low, charge battery and perform a battery load/conductance test; replace if failing.
- With a quality DVOM/scan tool, start engine and record charging voltage at battery positive and at alternator B+ terminal. Confirm proper regulator behavior across idle and rev range.
- Perform a voltage drop test on positive and negative battery feeds (engine running and key off) to find high resistance connections.
- Inspect voltage sense and charge control wiring between alternator and ECU for continuity and shorts to battery or ground. Repair damaged wiring/connectors.
- Check for parasitic drains with ignition off (measure current draw). Isolate any aftermarket accessory if present.
- If alternator output is inconsistent or voltage regulator is faulty, bench-test or replace alternator as required.
- Verify fuses/fusible links and replace if blown; confirm proper charging circuit wiring to ECU.
- If wiring, battery, and alternator are good but code persists, suspect ECU power supply or internal fault — consult manufacturer procedures before replacing ECU.
- After repairs, clear codes and perform road/test drive while monitoring system voltage and confirming no code return.
Likely causes
- Battery has low resting voltage or fails load test
- Alternator output is inconsistent or out of range
- Voltage sense wire to engine controller is open or shorted
- Main battery negative or engine ground is corroded/loose
- Accessory or after-market electrical device drawing excessive current
Fault status
Status
System voltage outside allowed range detected — check battery, charging system, wiring and grounds.
Repair difficulty: Medium
Diagnostic time: 1.0-2.5 hours
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