OBD-II trouble code
U0413: Invalid Data Received From Battery Energy Control Module B
A module is receiving messages from battery energy control module B, but the data inside them is implausible or out of range. Seen on hybrids and EVs that use more than one battery supervisor. The connection is alive — the content is wrong. High-voltage system: professional diagnosis.
Quick facts
- System
- Network
- Category
- Network Communication
- Severity
- Medium severity
- Drivable
- Usually safe to drive short-term
- Repair cost range
- $100 – $1,500
- DIY difficulty
- Shop recommended
What does U0413 mean?
This code is the 'B' counterpart to U0412. On hybrid and electric vehicles with a larger or split high-voltage pack, the battery management job may be shared across more than one supervisor — battery energy control module 'A' and 'B'. Each module monitors cell voltages and temperatures for its section of the pack, calculates available power, and reports to the hybrid or vehicle control unit over the network. U0413 sets when a receiving module is still hearing from battery energy control module B, but the data in its messages is invalid: a value is out of range, implausible, or contradicts what other modules see. The link is alive; the content can't be trusted — the key difference from a lost-communication code like U0112, where module B has gone completely silent.
Because the fault is bad data rather than a dead connection, the causes lean toward whatever makes module B report wrong information. A failing cell-voltage sense line, a pack-section temperature sensor, or a current sensor tied to that module can push it into broadcasting values other modules reject. Low 12-volt system voltage is a classic trigger, since the module's control logic gets unreliable as its low-voltage supply sags. The module's software can be at fault if it's outdated, corrupted, or was never programmed after service, and electrical noise or damaged bus wiring can corrupt otherwise-good messages. Because module A and B share the network, a bus problem may set both codes at once — which itself points at wiring rather than the module. This is a high-voltage system, so diagnosis and repair belong with a qualified hybrid/EV technician.
Symptoms follow which data is invalid and largely mirror U0412: reduced power, limited charging or regenerative braking, an inaccurate state-of-charge or range readout, or a protective mode, along with hybrid-system or master warning lights. The vehicle is often still driveable in a reduced state, but U0413 is frequently a secondary code — read the full list, because a companion battery, cell, or contactor code often names the real root cause.
Common causes
- Failing cell-voltage sense line for module B's pack section feeding implausible data
- Pack-section temperature or current sensor fault producing out-of-range values
- Low 12-volt system voltage or a weak auxiliary battery
- Outdated, corrupted, or mismatched battery energy control module B software
- Module or high-voltage pack serviced/replaced without proper programming
- Electrical noise or damaged bus wiring corrupting messages (may set U0412 and U0413 together)
- Battery energy control module B internal fault
- Corrosion or a loose connection at module B's low-voltage connector
Symptoms
- Reduced power or a protective 'turtle'/limp mode
- Charging or regenerative braking limited or disabled
- Inaccurate state-of-charge or driving-range readout
- Hybrid system or master warning light illuminated
- Hybrid leaning more heavily on its gasoline engine
- Companion battery, cell, or contactor codes (and sometimes U0412) stored alongside U0413
- Vehicle often still driveable in a reduced state
Diagnostic steps
- 1.Read ALL stored codes first — U0413 is often secondary to a battery cell, temperature, or contactor code, and may appear with U0412 if the bus is at fault.
- 2.Check the 12-volt battery and charging system; low auxiliary voltage is a common cause of implausible module data even on high-voltage vehicles.
- 3.Use a capable scan tool to review module B's cell voltages, temperature, current, and state-of-charge for out-of-range values.
- 4.Inspect module B's low-voltage connectors and bus wiring for corrosion or damage (leave high-voltage service to qualified technicians).
- 5.Verify battery energy control module B has the correct, current calibration, especially after any pack or module service.
- 6.Address any companion codes before condemning the module; the underlying fault often clears U0413.
Repair cost
$100 – $1,500
Cost varies with the fault and is wider than most invalid-data codes because high-voltage hardware is expensive. A software reflash runs $100-$300, and correcting a weak 12-volt battery or charging fault $150-$600. A sensing component or harness repair typically runs $250-$800 with diagnosis. Battery energy control module replacement with programming is the high end — often $900-$1,500 or more on some platforms — and should only follow thorough diagnosis at a qualified hybrid/EV shop, since U0413 is frequently a secondary code.
Estimate your repair
Run the numbers for your vehicle
Open the Repair Cost Estimator with module communication / can bus diagnosis preselected. Adjust labor rate and vehicle category to fit your situation.
DIY vs shop
Leave this one to a qualified shop. It typically involves emissions-critical components, refrigerant handling, or other work that requires manufacturer-grade tooling, training, or certification. DIY attempts often produce a more expensive problem than the original code.