P0562 on Jeep: How to Diagnose & Fix
System Voltage Low
3 Jeep models · 4 documented issues · 4 critical · $200-$3,000 repair
P0562 on Jeep by model: symptoms, diagnosis and fix
Certain 2012-2014 Jeep Grand Cherokee vehicles are covered by alternator-diode safety recalls P60 / NHTSA 14V-634 or T36 / NHTSA 17V-435. P60 covers specified 3.6L vehicles with a 160A alternator. T36 covers VIN-included WK vehicles with electro-hydraulic power steering and specified 3.6L or 5.7L, 160A, 180A, or 220A configurations. FCA says thermal or rapid diode failure can stop alternator output, cause a stall with limited warning, or create a resistive short that produces heat, smoke, or an underhood fire. The exact campaign and completion status are VIN-specific.
Common Symptoms
- Limited or no warning before alternator output is lost
- Battery or charging-system warning
- Electrical systems lose power or the engine stalls
- Heat, smoke, burning odor, or fire from the alternator area
How to Fix
Check the VIN for open P60 / 14V-634 and T36 / 17V-435 campaigns and schedule an authorized Jeep dealer if either is incomplete. FCA's T36 procedure has the dealer inspect the alternator part-number tag; a listed improved unit needs no further action, while a suspect, illegible, missing, aftermarket, or remanufactured unit is replaced under the campaign with an alternator containing improved diodes. The recall repair is free for an eligible VIN, and the owner notices include a reimbursement path for qualifying prior repairs. Because the recall repair is free, there is no need to buy a retail alternator in place of it. If the vehicle loses electrical power, stalls, or shows alternator heat, smoke, or fire, stop safely, move occupants away, and arrange towing or emergency assistance as appropriate.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Owner tips & cautions
- WarningRecall eligibility is VIN-specific. Check both P60 / 14V-634 and T36 / 17V-435; do not assume a prior generic alternator replacement completed the campaign.
- TipFCA's T36 process starts with the alternator tag. The dealer replaces the unit only when the tag/part status calls for it, and an illegible, missing, aftermarket, or remanufactured unit is handled under the campaign procedure for an eligible VIN.
Sources for this issue (3)
Grand Cherokees with electro-hydraulic power steering subject the alternator to cyclical electrical loads that cause thermal failure of the internal diodes. The alternator can fail suddenly, stalling the vehicle without warning and, in some cases, short-circuiting and causing an under-hood fire. Multiple NHTSA campaigns cover the 160/180/220-amp units.
Common Symptoms
- Sudden engine stall while driving
- Battery / charging warning light
- Dimming or flickering lights and dash warnings
- No-start or repeated dead battery
- Burning electrical smell from under the hood
How to Fix
Have the applicable recall performed (NHTSA 14V-634 for 160-amp 3.6L units, and 17V-435 for EHPS-equipped 5.7L/3.6L vehicles): dealers inspect and replace the alternator free of charge. Out of warranty, replace the alternator with an updated unit; budget roughly $400-$700 including labor.
Sources for this issue (3)
Owner reports and NHTSA complaints describe repeated dead 12V batteries and no-start conditions on Grand Wagoneer, often after sitting overnight or a few days. The pattern is consistent with parasitic draw from modules not going to sleep (commonly telematics/infotainment-related controllers), leading to low voltage and cascading network faults.
Common Symptoms
- No-crank/no-start after sitting
- Multiple warning lights after jump start
- Remote start inoperative
- Battery voltage low message
- Repeated need for jump starts or battery replacement
How to Fix
Perform a parasitic draw test with an ammeter and use a scan tool to identify modules staying awake; update software per applicable Stellantis service bulletins and replace the failing module if it will not sleep. Replace the 12V battery if it has been deeply discharged multiple times and verify charging system output.
What you need to diagnose it
The fix here starts with a test, not a part — which repair you need depends on what the test finds.This issue involves U codes, which a basic engine-code reader cannot see.At least one code uses a manufacturer-specific format. No scanner recommendation is shown because family-level coverage cannot prove it can read that code.
UNI-T UT210E Low-Current DC Clamp Meter
1 mA resolution on the 2 A range — a 0.1 A meter reads a 50 mA drain as zero
$40–$70View
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
Testing and isolating the fault is DIY work. Replacing or reprogramming a control module is not — most are VIN-programmed, so a new one does nothing until a shop codes it to your car. Check for an open recall or service bulletin before buying anything.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Duralast Platinum H7-AGM Group 94R main batteryOEMDuralast H7-AGM / SKU 319458
Confirm installed group, CCA, vent, terminal layout and VIN bec
- Duralast Platinum H8-AGM Group 49 main batteryOEMDuralast H8-AGM / SKU 319459
Do not substitute it for an installed H7 without confirming tray/
- Duralast Platinum AUX14 Group 400 AGM auxiliary batteryOEMDuralast AUX14 / SKU 755654
It is not the main battery; verify VIN/equipment and the installed auxiliary battery label
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Sources for this issue (1)
eTorque (mild-hybrid) Wranglers replace the conventional alternator/starter with a 48V belt-driven motor-generator (BSG/MGU) plus a 48V power pack unit (PPU) and a 12V system. Owners report charging-system failures, battery warning lights, rough/failed auto-starts during stop-start cycling, voltage drops, stalling, and no-starts. The most common culprit is the 48V PPU rather than the MGU itself, though both fail. The MGU/BSG (Mopar 68452771AF) is expensive and, once replaced, must be programmed with the dealer scan tool or it will not function. Components fall under the 8-year/80k-mile hybrid warranty, but out-of-warranty repairs are costly.
Common Symptoms
- Battery/charging warning light
- Rough or failed engine restart in stop-start traffic
- Voltage drops, stalling, or no-start
- Service charging system / hybrid warning messages
- Dead 12V battery despite a recent replacement
How to Fix
Diagnose the 48V/12V charging system with the dealer scan tool to distinguish a failed 48V PPU (the most frequent cause) from a failed belt-starter generator (MGU). Replace the PPU or the MGU (Mopar 68452771AF) as indicated; a new MGU MUST be programmed/initialized with the factory tool before it will operate. Inspect the dedicated BSG belt/tensioner (PN 05281667AC) and 12V battery health, since a weak 12V battery can mimic charging faults. Use the hybrid warranty where eligible.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine Mopar 68381513AA 48V Power Pack Unit battery kitOEMMopar 68381513AA
Replace a professionally diagnosed failed 48V PPU after warranty and VIN checks Fitment/availability: Cataloged 2018-2024 Wrangler eTorque applications; VIN confirmation required.
- Genuine Mopar 68432441AC 2.0L eTorque motor-generatorOEMMopar 68432441AC
Replace a factory-scan-confirmed failed early 2.0L eTorque generator Fitment/availability: 2019-2020 Wrangler JL with 2.0L eTorque as explicitly cataloged; not a later non-eTorque 2.0L and not the 3.6L MGU. Requires factory initializatio…
- Genuine Mopar 68452771AF 3.6L eTorque motor-generatorOEMMopar 68452771AF
Replace a factory-scan-confirmed failed 3.6L eTorque MGU Fitment/availability: Retail fitment explicitly lists 2022-2023 Wrangler 3.6L MHEV; confirm VIN/supersession for any other year.
- Genuine Mopar 5281668AA 2.0L eTorque BSG beltOEMMopar 5281668AA
Replace a cracked, contaminated or out-of-spec BSG drive belt on the compatible 2.0L branch Fitment/availability: 2019 Wrangler JL 2.0L eTorque catalog page; broader early-JL use must be confirmed by VIN.
- Genuine Mopar 05281667AD lower BSG belt tensionerOEMMopar 05281667AD
Replace a confirmed failed lower BSG tensioner on the compatible 2.0L branch Fitment/availability: 2018-2026 Wrangler JL 2.0L with Belt-Start Generator per retailer; verify VIN and actual eTorque configuration.
- Genuine Mopar 5281592AA 3.6L eTorque MGU drive beltOEMMopar 5281592AA
Replace a cracked, contaminated or out-of-spec MGU drive belt on the compatible 3.6L branch Fitment/availability: 2019-2023 Wrangler JL 3.6L ERG eTorque according to the live listing; confirm VIN/build because the issue's broad 2018-2024…
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Sources for this issue (2)
P0562 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0562 mean on a Jeep?
P0562 stands for "System Voltage Low." P0562 means the engine computer detected that the vehicle's system (battery/charging) voltage is too low for normal operation. The computer constantly monitors charging-system voltage because nearly every sensor, injector, and module depends on a stable supply; sustained low voltage can cause erratic behavior and other false codes. This is most often a charging or battery problem — the alternator isn't keeping up, the battery is weak, or there's resistance in the cables/grounds. You may notice dim lights, slow cranking, or multiple unrelated warning lights. On Jeep it is documented across 3 models: Grand Cherokee, Grand Wagoneer, Wrangler.
What are the most common causes of P0562?
The most common causes of P0562 are: Failing alternator or worn alternator brushes/regulator, Weak, old, or discharged battery, Corroded, loose, or damaged battery cables and terminals, Bad engine or chassis ground connections, Slipping, glazed, or broken serpentine/drive belt, High resistance in charging system wiring or fusible link, Faulty PCM voltage reference or charging-system control. The specific cause varies by vehicle.
How much does it cost to fix P0562 on a Jeep?
Published repair estimates on Jeep range from $200 to $3,000 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0562 on a different make?
View P0562 across all makes →Join 700+ subscribers following Au7o for vehicle insights and updates.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.