P0562 Code: Chevrolet Cruze (2016-2019) - Causes, Symptoms & Fixes

Comprehensive diagnostic guide for OBD2 code P0562 on a 2016-2019 Chevrolet Cruze

Data context note

• According to the provided data, there are no owner complaints and no recalls found in the NHTSA database for this make/model/year/issue. No recalls found in NHTSA database.

CODE MEANING AND SEVERITY

• Code meaning: P0562 = System Voltage Low. The PCM/ECM has detected battery/charging system voltage below the expected threshold. This typically points to insufficient electrical power being supplied to the engine control module and other drivability components.
• Likely scenario in Cruze: The vehicle’s charging system (battery, alternator, wiring, grounds) is not delivering proper voltage. This can cause electrical accessories to underperform, crank/restart issues, and potential drivability problems.
• Severity: Moderate to high. Prolonged or repeated low system voltage can cause stalling, hard starts, misfires, limp-mode behavior, and can risk damage to the electrical/electronic modules if not addressed. Do not ignore repeated P0562 occurrences, especially if the Check Engine Light and Battery/Charging indicators are active.

COMMON CAUSES ON CHEVROLET CRUZE

• Faulty alternator or failing voltage regulator (most common)
• Weak, failing, or discharged battery
• Poor or corroded battery terminals and connections (positive and ground)
• Loose, damaged, or corroded battery ground/earth strap or main power ground to the PCM
• Damaged or chafed charging/battery wiring (positive lead, fusible links, or harness damage)
• Blown or weak fuses/fusible links in the charging/power supply circuit
• Excessive electrical load (e.g., aftermarket devices) or substantial parasitic drain, especially with key off
• Faulty ignition switch or ignition/engine wiring causing intermittent voltage drop
• PCM power supply or ground issues (less common, but possible if battery voltage dips reaching the PCM)

SYMPTOMS YOU MIGHT NOTICE WITH P0562

• Battery warning light or the check engine light on
• Dim or uneven headlights, taillights, or interior lights
• Slow or hard engine cranking; extended crank times
• Engine stalls or fails to start
• Intermittent or degraded drivability, may enter a limp mode
• Other electrical issues (power windows/locks slower than normal, ecm-normal operation degraded)
• Inconsistent performance or poor idle quality
• Scan data showing low system voltage during runs (engine on)

DIAGNOSTIC STEPS

Preparation and safety

• Tools: digital multimeter (DMM), OBD2 scanner/utility, basic hand tools, battery load tester if available, battery terminal cleaner, flashlight, and ideally a helper for cranking tests.
• Safety: Work with the engine off for initial battery checks; ensure no loose metal jewelry, and be cautious around moving belts when testing under the hood.

Step-by-step diagnostic flow

• Step A: Confirm current condition

  • Use an OBD2 scanner to confirm P0562 is current and note freeze-frame data (engine RPM, battery voltage, load conditions).
  • Check for other charging/PCM-related codes (e.g., P0560, P0563) that may appear together.

• Step B: Battery health check (static)

  • With engine off, measure battery voltage. Should be around 12.6 V or higher for a healthy, fully charged battery.
  • If voltage is significantly low (e.g., <12.0 V), charge or replace the battery as needed before further tests.

• Step C: Battery and electrical connections inspection

  • Inspect battery terminals for corrosion, looseness, or damage. Clean and reseat connectors if needed; apply dielectric grease after cleaning.
  • Inspect positive battery cable and any visible fusible links for signs of damage or melting.
  • Check battery ground strap to chassis/engine block for tightness and corrosion.

• Step D: Charging system test (alternator output)

  • Start the engine. With the engine running, measure the charging voltage at the battery terminals.
  • Expected range: roughly 13.8–14.8 volts. If the reading is below ~13.5 V or above ~14.8 V, there's a charging issue.
  • If available, perform a loaded alternator test or a simple test under higher electrical load (gas pedal to increase idle, turn on A/C, headlights, rear defog, etc.) and re-check voltage.

• Step E: Voltage drop and grounding checks

  • Perform a voltage drop test on the main power and ground circuits feeding the PCM.
  • Check for excessive resistance in the primary grounds (engine block to chassis) and PCM ground path. A high resistance can cause the PCM to see low voltage even if the battery and alternator are OK.
  • Specifically inspect the ground strap between the engine and chassis and the ground connection near the battery to the body.

• Step F: Inspect charging circuit wiring and fuses

  • Inspect the wiring from the alternator to the battery, including any fusible links or hot leads in the charging circuit.
  • Look for chafed insulation, damaged connectors, or loose/oxidized connections.
  • Replace blown fuses or fusible links in the charging circuit if found.

• Step G: Parasistic load assessment

  • With engine off and doors closed, use a parasitic draw test to determine if an abnormal load is draining the battery. A typical modern vehicle should draw only a small amount (a few tens of milliamps) when asleep; excessive draw can lead to low voltage and repeated P0562 on next drive.

• Step H: PCM power/ground integrity

  • If battery, alternator, and wiring check out, monitor PCM power feeds and ground integrity while the vehicle is running. Faulty or intermittent PCM power supply can cause erroneous low voltage readings.

• Step I: Clear codes and road test

  • After addressing the likely causes (battery/alternator/wiring), clear the codes and perform a road test to see if P0562 recurs. If it does, re-check all steps, particularly the charging circuit and grounds.

Notes on related codes

• P0560 System Power Input Malfunction: May appear with P0562 if the main power input to the PCM is degraded.
• P0563 System Voltage High: If voltage spikes occur, it could co-exist with other charging system faults and should be diagnosed similarly.
• If a related drive cycle indicates battery or charging system concerns, treat all charging system codes as interconnected and test comprehensively.

RELATED CODES (brief overview)

• P0560: System Power Input Malfunction
• P0563: System Voltage High
• These codes often accompany P0562 or indicate broader charging/voltage issues. Investigate charging system integrity and PCM power paths when multiple P056x codes appear.

REPAIR OPTIONS AND COSTS (2025 prices)

Note: Prices vary by region, shop, vehicle options, and availability. The ranges below are typical ballparks for U.S. shops. All figures assume standard labor rates and typical vehicle access.

• Battery replacement

  • Parts: $70–$180 (typical AGM or conventional battery)
  • Labor: $15–$60
  • Total: roughly $85–$240
  • When considered alongside P0562, replacing a weak/failed battery often resolves low voltage symptoms.

• Alternator replacement

  • Parts: $180–$450
  • Labor: $100–$250
  • Total: roughly $280–$700
  • Typical resolution for a failed alternator causing low system voltage.

• Battery/cable terminals and wiring repairs

  • Parts: $5–$100 (terminals, cleaners, minor harness repair)
  • Labor: $50–$150 (depending on access and extent)
  • Total: $55–$250
  • Often quick fixes for corrosion or loose connections; can be sufficient if the battery/alternator are OK.

• Ground strap or PCM power/ground repair

  • Parts: $0–$40 (ground straps or connectors)
  • Labor: $60–$200 (may require engine removal or substantial harness access in some cases)
  • Total: $60–$240
  • More involved if wiring harness repair is required.

• Fusible links/fuses in charging circuit

  • Parts: $10–$40
  • Labor: $20–$100
  • Total: $30–$140

• PCM replacement or programming (rare)

  • Parts: $400–$900 (used PCM may be cheaper; new PCM higher)
  • Labor/Programming: $150–$400
  • Total: roughly $550–$1,300+
  • Considered only if proven PCM-related power/voltage control failure after exhaustive testing.

• Summary guidance

  • In most Cruze cases, the issue resolves with a healthy battery/alternator and proper wiring/terminals. If those areas are sound, further electrical diagnosis (ground paths to the PCM and wiring harness integrity) becomes necessary.

DIY vs PROFESSIONAL

• DIY options for confident electrical technicians:
  • Basic battery health check, terminal cleaning, and corrosion removal
  • Measuring battery and alternator voltages with engine running
  • Simple voltage drop tests on grounds and main power feeds (requires understanding of electrical testing)
  • Checking for parasitic drain with engine off
• DIY risks:
  • Misdiagnosing a failing alternator or wiring issue could lead to repeated failures or drifting voltages that damage modules.
  • A high current path fault can be hazardous if not handled properly.
• Professional path:
  • If any of the above tests reveal abnormal voltages, resistance, or if multiple P056x codes appear, a professional technician with a charging system scope, load test, and proper electrical diagnostic tools should be engaged.
  • For a vehicle that repeatedly shows P0562 after battery replacement, a shop can perform deeper diagnostics, including PCM power-path checks and harness testing, and can ensure there is no hidden parasitic drain.

PREVENTION

• Regular charging system maintenance:
  • Have the battery and alternator tested during routine service or at least annually or after harsh winters.
  • Ensure the charging voltage remains within the standard range (roughly 13.8–14.8 V with engine running).
• Keep electrical connections clean and tight:
  • Clean any corrosion on battery terminals; apply a light coating of dielectric grease after cleaning.
  • Inspect main positive cable and ground straps for wear or looseness; replace if damaged.
• Monitor electrical loads:
  • Avoid adding high-draw aftermarket devices without proper power management; disconnect devices if you notice unusual electrical behavior.
• Prevent parasitic drains:
  • If the vehicle sits unused for extended periods, consider a battery maintainer or disconnecting nonessential loads as appropriate.
• Routine inspections:
  • During regular service, have a tech visually inspect the wiring harnesses around the engine bay, especially the charging circuit, alternator connections, and engine ground paths.

Important data caveat

• No recalls found in NHTSA database for this specific issue and model/year combination based on the provided data. If you have independent sources or updated data, verify against those.