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P060B00

DTC P060B00 indicates a performance fault in the A/D (analog-to-digital) conversion control module inside the IPB (Intelligent Power Brake/Integrated Power Brake) system ECU — Seal U

Braking System

DTC P060B00 indicates a performance fault in the A/D (analog-to-digital) conversion control module inside the IPB (Intelligent Power Brake/Integrated Power Brake) system ECU.

The IPB ECU uses the A/D converter to acquire real-time analog signals from the brake pedal travel sensor, brake master cylinder pressure sensor, wheel cylinder pressure sensor, motor current sensor, and temperature sensor.

It converts these into digital signals for the processor to calculate brake force distribution and regenerative braking coordination.

The ECU triggers this DTC if its self-check detects reference voltage drift in the A/D conversion circuit, reduced sampling accuracy, conversion logic errors, or if the internal monitoring circuit detects abnormal A/D conversion timing.

This fault forces the braking system into a safety fallback mode (limp mode) and may restrict or disable ABS, ESC, Automatic Emergency Braking (AEB), and parking system functions.

This is a brake safety-critical fault.

5
Cases Logged
Real-World Cases
BYD DTC AI Analysis

BYD Song PLUS DM-i: IPB internal ADC monitoring fault caused ESC failure

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While driving normally, the ESC, ABS and brake system warning lights illuminated simultaneously. The instrument cluster displayed "Brake System Fault". The vehicle remained drivable but automatic emergency braking was disabled. VDS scan showed P060B00 (Internal A/D Control Module Fault) with C003708 (Master Cylinder Pressure Sensor Signal Abnormal). IPB supply voltage measured 12.4V (normal) and sensor wiring showed no shorts or opens. Reflashed IPB software to the latest version; fault persisted. Diagnosis: hardware failure in the IPB ECU internal A/D conversion circuit. Replaced the IPB electro-hydraulic brake assembly (with ECU) and performed brake line bleeding and pressure sensor calibration. Fault cleared; all functions returned to normal.
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BYD DTC AI Analysis

Song Max IPB poor ground causing intermittent P060B00 fault

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The brake system warning light illuminated intermittently. When the fault occurred, the brake pedal became stiff and brake assist dropped significantly. Diagnosis revealed the IPB ECU ground wire bolt at the left front longitudinal beam ground point had loosened, causing ground resistance to fluctuate between 0.8–15 Ω. This caused the A/D conversion reference voltage to drift with load current changes, triggering the internal monitoring fault. After sanding the ground point and tightening the ground wire bolt to the specified torque of 10 N·m, ground resistance fell below 0.3 Ω and the fault did not recur. This case demonstrates that power supply grounding abnormalities cause false A/D module fault reports.
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BYD DTC AI Analysis

Tang DM Transmission Control Unit P060B00 Fault Reference (A/D Conversion Mechanism Similarity)

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Although this case comes from the transmission control unit (TCU), the P060B00 fault mechanism closely resembles the IPB system: both involve abnormal A/D conversion performance inside the control unit. Symptoms include harsh shifting and abnormal clutch control. The repair procedure: first check the TCU power and ground circuits, then try a TCU software update or reflash. If that fails, replace the transmission control unit and program it online. This diagnostic sequence (circuit check → software reflash → hardware replacement) fully applies to P060B00 faults in IPB brake systems.
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BYD DTC AI Analysis

Technical Reference: P060B Internal Control Module Fault Repair Logic for Generic Models

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Based on P060B repair experience from other brands' powertrain control modules (PCM): symptoms include multiple system warning lights on, rough idle, and reduced functionality. Standard repair procedure: ① Thoroughly inspect PCM power supply, ground, and CAN communication circuits ② Flash/program the control unit software ③ If the fault persists, replace the control unit and perform immobilizer matching and configuration programming. This standardized procedure also applies to P060B00 faults in BYD IPB systems, significantly cutting diagnostic time.
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BYD DTC AI Analysis

Qin Pro DM Brake System Hard to Start Associated with IPB A/D Fault

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When starting the vehicle, the brake pedal was too stiff to depress, or if depressed, the vehicle would not enter Ready mode (high-voltage system stayed off). The instrument cluster displayed "Brake System Fault". VDS read DTC P060B00 (Internal A/D Control Module Fault). Inspection found an intermittent failure in the IPB ECU's A/D conversion circuit, causing erratic brake pedal position and master cylinder pressure signals. The safety system flagged this as a serious brake fault and prevented the vehicle from starting. Software flash failed. Replaced the IPB electro-hydraulic brake module assembly and completed online programming and sensor calibration. The vehicle now starts and brakes normally.
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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.