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P060C00

In the BYD IPB (Integrated Power Brake) system, DTC P060C00 indicates an internal control module main processor performance fault or internal self-test failure — Seal U

Braking System

In the BYD IPB (Integrated Power Brake) system, DTC P060C00 indicates an internal control module main processor performance fault or internal self-test failure.

This fault isolates to a calculation error, clock fault, memory checksum failure, or internal bus communication interruption within the core processor (MCU) of the ECU built into the IPB electro-hydraulic module.

Because the IPB system integrates key functions including ABS, ESP, EPB, Automatic Emergency Braking (AEB), and energy recovery, this fault can cause brake assist failure, restricted ESC operation, and unavailable AEB, posing serious safety risks.

The vehicle typically enters brake system degraded mode (limp mode).

4
Cases Logged
Real-World Cases
BYD DTC AI Analysis

Song PLUS DM-i IPB Module Intermittent High-Temperature Fault

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Vehicle had approximately 20,000 km when, after extended driving in summer heat (ambient temperature >38°C), the instrument panel suddenly lit the ABS and ESC warning lights with "Brake System Fault". Automatic emergency braking was unavailable. Diagnosis retrieved P060C00 (current fault). Freeze frame showed IPB internal temperature at 85°C when the fault occurred. IPB power supply and ground checked normal; CAN communication showed no abnormalities. Updated IPB software to the latest version, but the fault recurred during subsequent high-temperature testing. Replaced the IPB electro-hydraulic module assembly — fault resolved. Analysis: IPB internal processor experiences performance drift at high temperatures. Hardware defect.
BYD DTC AI Analysis

Unstable battery voltage triggered IPB processor protection

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After sitting one week, the vehicle displayed a brake system fault at startup. Retrieved DTCs P060C00 (historical) and P056200 (low system voltage). Battery voltage was 10.8V (discharged). Replaced the battery, cleaned the IPB ground wire, and cleared the codes; the fault did not recur. Low startup voltage caused the IPB internal processor to reset abnormally, triggering the fault codes. Recommend checking vehicle parasitic draw and battery health.
BYD DTC AI Analysis

IPB software defect causing intermittent fault codes

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No obvious symptoms, but the 4S dealership found intermittent DTC P060C00 in the IPB system during routine maintenance. No modifications found; power and wiring normal. Per TSB, IPB control units in this batch of Song PLUS DM-i have a software defect that may falsely report internal faults under specific conditions (e.g., rapid consecutive brake presses). Reflashed software to version IPB_V2.3.8 or higher. Fault code cleared; no recurrence after extended monitoring.
BYD DTC AI Analysis

Internal short in IPB module after water exposure

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After driving through floodwater, multiple brake-related warning lights illuminated on the instrument cluster, including ABS, ESP, and EPB fault lights. The diagnostic tool read P060C00 (current fault) and C155200 (ECU internal fault). Inspection of the IPB electro-hydraulic module revealed water ingress at the connector and oxidation on the internal circuit board. Water entry caused a short circuit in the IPB internal control circuitry, resulting in abnormal main processor operation. Replaced the IPB assembly and sealed the wiring harness to resolve the fault. Recommend inspecting the sealing around the IPB mounting location and checking the breather vent condition.
Other Seal U Fault Codes
B1108For the BYD Song MAX (2017–2019), DTC B1108 indicates a short circuit in the PM2.5 air quality detection module (dust sensor) or its wiring harness. The sensor uses laser scattering to detect in-cabin and outside PM2.5 concentrations and transmits data to the HVAC ECU via the LIN bus or an analog signal. Short circuit conditions include: 1) Sensor power supply wire (+5V/+12V) shorted to ground 2) Signal wire shorted to power or ground 3) Short circuit in the sensor's internal photoelectric detection circuit This fault prevents the automatic climate control from switching between fresh air and recirculation based on air quality. The system enters fail-safe mode (typically forced recirculation). Severe short-circuit current can destroy the HVAC ECU sampling circuit. The system classifies this as a Level 3 severe fault and restricts vehicle operation to prevent electrical fires or controller damage. For other BYD models (such as the Qin EV, E5, and Song DM), B1108 indicates a driver-side sunload sensor fault, reflecting differences in DTC definitions across models.B110811This DTC indicates a short circuit in the air conditioning system PM2.5 air quality sensor (rapid detector). Specifically, abnormal continuity exists between the sensor power supply circuit or signal output circuit and body ground or battery positive. This causes the control module (ACU/air conditioning controller) to detect abnormal current or a voltage signal outside the valid range (typically 0V or supply voltage). The PM2.5 sensor monitors internal and external particulate concentrations, providing the data the automatic air conditioning system uses to switch between fresh air and recirculation modes. A short circuit disables the air quality monitoring function. This fault may force the air conditioning system into recirculation protection mode and trigger related thermal management system faults, as the air conditioning system acts as a key actuator in vehicle thermal management. In severe cases, the short circuit current can damage the internal sampling circuit of the air conditioning controller or overheat the wiring harness.B1109DTC B1109 indicates an open circuit in the communication line between the air conditioning system PM2.5 air quality sensor (dust concentration sensor) and the air conditioning control unit (AC ECU), or an open circuit within the sensor internal circuitry. Typically located in the air conditioning intake duct, this sensor monitors real-time PM2.5 particle concentration inside and outside the vehicle. It provides data to the automatic air conditioning system for intelligent switching between fresh air and recirculation modes and for controlling the air purification device. During an open circuit fault, the AC ECU cannot receive the air quality signal, triggering the system fail-safe mode. Symptoms typically include failure of the automatic recirculation function, abnormal air purification indicator light operation, or abnormal air quality data displayed on the air conditioning panel. Severe cases may compromise the cabin environment control strategy, but do not directly affect vehicle driving safety.B110913DTC B110913 indicates an open signal circuit for the PM2.5 rapid detector (in-cabin air quality sensor). This sensor typically mounts inside the air conditioning system intake duct. It monitors in-cabin PM2.5 concentration in real time and provides data to the automatic air conditioning system for intelligent control of the air purification function. The BYD diagnostic protocol uses sub-code '13' to specifically indicate an open signal circuit. Although this fault theoretically affects a comfort feature, BYD Qin series vehicles classify it as a Level 3 (severe) fault. This classification occurs because the air conditioning system interacts with the battery thermal management system (e.g., monitoring battery cooling intake air quality). The fault can disable the automatic air conditioning mode and prevent the air purification function from operating. In extreme cases, it affects the battery compartment intake air quality assessment, triggering the 'repair immediately' strategy.B110AThis DTC indicates interrupted CAN bus communication or abnormal data between the air conditioning control unit (ACU) and the PM2.5 air quality sensor. The PM2.5 sensor monitors particulate concentration inside and outside the vehicle and provides the basis for purification control in the automatic air conditioning system. The ACU triggers this fault if it fails to receive a valid CAN message from the sensor within the specified period (usually 100-500 ms), if message verification fails, or if the signal frame times out. Although this fault does not affect vehicle driving safety, it disables the automatic air purification function. The air conditioning system cannot automatically switch between recirculation and fresh air modes or activate the air purification mode based on air quality. A persistent fault may restrict the thermal management strategy.
Data confidence: Community This information is for reference only. Always consult a qualified technician for diagnosis and repair. Do not attempt high-voltage system repairs yourself.