Short answer: OBDAI decodes 150+ standard OBD2 parameters — engine data, fuel system, O2 sensors, emissions, turbo/boost, diesel-specific PIDs, and one hybrid PID. Your vehicle determines which PIDs are available; we decode whatever your car supports.
How This List Works
This shows what OBDAI can decode — not what your car supports.
Your vehicle determines which PIDs are available
Manufacturers only implement a subset of possible PIDs
No universal “which cars support which PIDs” list exists
OBDAI auto-detects your vehicle’s supported PIDs when you connect
Think of it this way: OBDAI speaks the full OBD2 language, but your car may only answer certain questions.
Service 01: Real-Time Data (149 PIDs)
Core Engine
PID Description Units 0x04 Calculated Engine Load % 0x05 Engine Coolant Temperature °C 0x0B Intake Manifold Absolute Pressure kPa 0x0C Engine RPM rpm 0x0D Vehicle Speed mph 0x0E Ignition Timing Advance (Cyl #1) ° 0x0F Intake Air Temperature °C 0x10 Mass Air Flow Rate g/s 0x11 Absolute Throttle Position % 0x1F Time Since Engine Start sec 0x42 Control Module Voltage V 0x43 Absolute Load Value % 0x5C Engine Oil Temperature °C
Fuel System
PID Description Units 0x03 Fuel System Status (Bank 1 & 2) status 0x06 Short Term Fuel Trim — Bank 1 & 3 % 0x07 Long Term Fuel Trim — Bank 1 & 3 % 0x08 Short Term Fuel Trim — Bank 2 & 4 % 0x09 Long Term Fuel Trim — Bank 2 & 4 % 0x0A Fuel Pressure (gauge) kPa 0x22 Fuel Rail Pressure (relative to manifold) kPa 0x23 Fuel Rail Pressure (direct injection) kPa 0x2F Fuel Level Input % 0x44 Fuel/Air Commanded Equivalence Ratio λ 0x51 Fuel Type Currently Utilized type 0x52 Alcohol Fuel Percentage % 0x59 Fuel Rail Pressure (absolute) kPa 0x5D Fuel Injection Timing ° 0x5E Engine Fuel Rate L/h
Oxygen Sensors — Narrowband
PID Description Units 0x13 Location of Oxygen Sensors bitmap 0x14 O2 Sensor B1-S1: Voltage & Fuel Trim V, % 0x15 O2 Sensor B1-S2: Voltage & Fuel Trim V, % 0x16 O2 Sensor B1-S3: Voltage & Fuel Trim V, % 0x17 O2 Sensor B1-S4: Voltage & Fuel Trim V, % 0x18 O2 Sensor B2-S1: Voltage & Fuel Trim V, % 0x19 O2 Sensor B2-S2: Voltage & Fuel Trim V, % 0x1A O2 Sensor B2-S3: Voltage & Fuel Trim V, % 0x1B O2 Sensor B2-S4: Voltage & Fuel Trim V, % 0x1D Location of Oxygen Sensors (alternate) bitmap
Oxygen Sensors — Wideband (Lambda)
PID Description Units 0x24–0x2B O2 Sensors B1/B2 S1-S4: Equiv Ratio & Voltage λ, V 0x34–0x3B O2 Sensors B1/B2 S1-S4: Equiv Ratio & Current λ, mA 0x55 Short Term Secondary O2 Trim — Bank 1 % 0x56 Long Term Secondary O2 Trim — Bank 1 % 0x57 Short Term Secondary O2 Trim — Bank 2 % 0x58 Long Term Secondary O2 Trim — Bank 2 % 0x8C O2 Sensor (Wide Range) Extended λ, %
Catalyst & Emissions
PID Description Units 0x3C Catalyst Temperature B1-S1 °C 0x3D Catalyst Temperature B2-S1 °C 0x3E Catalyst Temperature B1-S2 °C 0x3F Catalyst Temperature B2-S2 °C 0x2C Commanded EGR % 0x2D EGR Error % 0x69 Commanded EGR and EGR Error % 0x6B Exhaust Gas Recirculation Temperature °C 0x12 Commanded Secondary Air Status status 0x2E Commanded Evaporative Purge % 0x32 Evaporative System Vapor Pressure Pa 0x53 Absolute Evap System Vapor Pressure kPa 0x54 Evap System Vapor Pressure (Hi-Res) Pa
Throttle & Pedal Position
PID Description Units 0x45 Relative Throttle Position % 0x47 Absolute Throttle Position B % 0x48 Absolute Throttle Position C % 0x49 Accelerator Pedal Position D % 0x4A Accelerator Pedal Position E % 0x4B Accelerator Pedal Position F % 0x4C Commanded Throttle Actuator Control % 0x5A Relative Accelerator Pedal Position % 0x6C Commanded Throttle & Relative Position % 0x8D Absolute Throttle Position G %
Diagnostic Status
PID Description Units 0x01 Monitor Status Since DTCs Cleared status 0x02 DTC That Caused Freeze Frame DTC 0x1C OBD Standards Compliance type 0x1E Auxiliary Input Status status 0x21 Distance Traveled While MIL Active km 0x30 Warm-ups Since DTCs Cleared count 0x31 Distance Traveled Since DTCs Cleared km 0x41 Monitor Status This Drive Cycle status 0x4D Engine Run Time While MIL Active min 0x4E Engine Run Time Since DTCs Cleared min 0x5F Emission Requirements type 0x65 Auxiliary Inputs/Outputs status
Turbocharger & Boost
PID Description Units 0x33 Barometric Pressure kPa 0x6F Turbocharger Compressor Inlet Pressure kPa 0x70 Boost Pressure Control status 0x71 Variable Geometry Turbo (VGT) Control status 0x72 Wastegate Control % 0x73 Exhaust Pressure kPa 0x74 Turbo RPM rpm 0x75 Turbocharger A Temperature °C 0x76 Turbocharger B Temperature °C 0x77 Charge Air Cooler Temperature (CACT) °C
Diesel-Specific
PID Description Units 0x6A Commanded Diesel Intake Air Flow % 0x6D Fuel Pressure Control System kPa 0x6E Injection Pressure Control System kPa 0x78 Exhaust Gas Temperature Bank 1 °C 0x79 Exhaust Gas Temperature Bank 2 °C 0x7A Diesel Particulate Filter (DPF) Bank 1 kPa 0x7B Diesel Particulate Filter (DPF) Bank 2 kPa 0x7C DPF Temperature °C 0x83 NOx Sensor ppm 0x85 NOx Control System status 0x86 Particulate Matter (PM) Sensor mg/m³ 0x8B Diesel Aftertreatment Status status 0x92 Fuel System Control (Compression Ignition) status
PID Description Units 0x61 Driver’s Demand Engine Torque % 0x62 Actual Engine Torque % 0x63 Engine Reference Torque Nm 0x64 Engine Percent Torque Data % 0x8E Torque Friction Percent %
Hybrid
PID Description Units 0x5B Hybrid Battery Pack Remaining Life %
See Hybrid & EV Vehicle Support for more details.
Extended Engine Data
PID Description Units 0x66 Mass Air Flow Sensor (Extended) g/s 0x67 Engine Coolant Temperature (Extended) °C 0x68 Intake Air Temperature Sensor (Extended) °C 0x7F Engine Run Time (Extended) sec 0x81–0x82 Engine Run Time for AECD #1-10 sec 0x84 Manifold Surface Temperature °C 0x87 Intake Manifold Absolute Pressure (Extended) kPa 0x89–0x8A Engine Run Time for AECD #11-20 sec 0x98–0x99 Exhaust Gas Temperature (Extended) °C
Emissions Compliance (WWH-OBD)
PID Description Units 0x7D NOx NTE Control Area Status status 0x7E PM NTE Control Area Status status 0x88 SCR Induced System Actual State status 0x8F Particulate Matter Sensor Output status 0x90–0x91 WWH-OBD Vehicle/ECU System Info status 0x93 WWH-OBD Vehicle OBD Counters hours 0x94 NOx Control Driver Inducement Status status 0x95 SCR Catalyst NH3 Storage Data status
InfoType Description 0x00 InfoTypes Supported [01-20] 0x02 Vehicle Identification Number (VIN) 0x04 Calibration Identifications (CAL ID) 0x06 Calibration Verification Numbers (CVN) 0x08 In-Use Performance Tracking (IPT) 0x0A ECU Name 0x0B In-Use Performance Tracking (Extended)
Not Yet Implemented
These PIDs are defined in SAE J1979 but we haven’t added full decode support yet:
Service 01:
0x9A — Hybrid/EV Vehicle System Data
0xAB — Alternative Fuel Vehicle Data
0x96–0x9F, 0xA0–0xB0 — Extended parameters (newer standard)
Service 09:
0x1A–0x1C — Plug-in Hybrid Distance/Fuel/Grid Data
0x48–0x50 — HD GHG Plug-in Hybrid Data
Service 06: On-Board Monitor Test Results (different data structure, planned for future)
The Standard Keeps Evolving
SAE International continuously adds new PIDs for emerging vehicle tech — EVs, advanced hybrids, fuel cells. We’re committed to keeping OBDAI current as new PIDs are published.
Request a PID
Need something not on this list? Tell us:
The PID number and description
Your vehicle (year/make/model)
Any documentation about the data format
We prioritize based on user demand.
Questions? support@obdai.app
