What causes fault code P0560?

• Most likely: Defective or discharged battery • Likely: Failing alternator or internal voltage regulator • Possible: Excessive resistance or corrosion in battery cables/ground straps • Rare: Damaged wiring harness to the ECM or internal ECM fault

How do you fix fault code P0560?

STEP 1: Check battery resting voltage (should be approx. 12.6V) and ensure terminals are clean and tight. Inspect main grounds. STEP 2: Start the engine and measure charging voltage. It should be between 13.8V and 14.7V at 2000 RPM. If >15V, the regulator is likely faulty. STEP 3: Perform a voltage drop test on positive and negative battery cables (max 0.2V allowed). STEP 4: If the charging system is confirmed functional, verify voltage at the ECM power pins. Check for circuit integrity; if power is correct but code persists, consider ECM replacement or software update.

Powertrain (Engine & Gearbox)Standard EOBD

P0560 - System Voltage Malfunction

Q: What are the symptoms of fault code P0560?

• Check Engine Light (MIL) illumination • Battery/Charging system warning light is on • Engine hard to start or clicking during cranking • Transmission may enter Limp Mode • Erratic behavior of electrical accessories

Last updated:1 February 2026

Related:Battery, Generator (Dynamo), Voltage Regulator, Engine Control Unit (ECU), Batterikablar

System

Powertrain (Engine & Gearbox)

Related Fault Codes

P0500

Vehicle Speed Sensor (VSS) 'A' Range/Performance

P0501

Vehicle Speed Sensor 'A' Range/Performance

P0502

Vehicle Speed Sensor 'A' Circuit Low Input

P0503

Vehicle Speed Sensor (VSS) Intermittent/Erratic/High

Technical Description

P0560 is a generic OBD-II code indicating the Engine Control Module (ECM) has detected an improper voltage level from the battery or charging system. The ECM monitors system voltage to ensure stable operation of processors and sensors. If the voltage remains outside the calibrated range (typically below 10V or above 16V depending on OEM logic) for a predetermined duration, the code is stored. This fault can destabilize the CAN-bus network and cause various modules to enter fail-safe modes.

Possible Causes

Defective or discharged battery

Failing alternator or internal voltage regulator

Excessive resistance or corrosion in battery cables/ground straps

Damaged wiring harness to the ECM or internal ECM fault

Symptoms

Check Engine Light (MIL) illumination

Battery/Charging system warning light is on

Engine hard to start or clicking during cranking

Transmission may enter Limp Mode

Erratic behavior of electrical accessories

Do you also have
other fault codes?

See how P0560 connects with your other fault codes. Our advanced analysis tool identifies causal relationships and root causes directly.

Analyze multiple codes

P0560 - System Voltage Malfunction

Related Fault Codes

Technical Description

Possible Causes

Symptoms

Recommended Solution

Workflow

Mechanic's Tip

Do you also have
other fault codes?

P0560 - System Voltage Malfunction

Related Fault Codes

Technical Description

Possible Causes

Symptoms

Recommended Solution

Workflow

Mechanic's Tip

Do you also have other fault codes?

Do you also have
other fault codes?