Master the Code.
Fix the Fault.
Don't just read the code — understand it. Access the industry's most comprehensive library of OBD2 and manufacturer-specific DTCs, complete with step-by-step diagnostic flowcharts and real-world fix data.
- • Faulty Catalytic Converter (Bank 1)
- • Exhaust Leak before Catalyst
- • Faulty O2 Sensor (B1, S2)
- • Engine Misfire / Running Rich
Complete Coverage of All Code Types
We cover every OBD2 code category including thousands of manufacturer-specific codes not available in generic scanners.
Powertrain
Engine, transmission, fuel system and emissions. The most commonly retrieved codes in workshop use.
Body
Body control modules, airbag, seat control, climate, windows and security systems.
Chassis
ABS, traction control, ESC, ride height, steering and suspension control codes.
Network/CAN Bus
Controller Area Network faults, module communication failures and gateway errors.
Beyond Generic Scanners
A generic code reader gives you a number. Auto Fix Data gives you the complete diagnostic strategy.
OEM-Specific Codes
Go beyond generic P0xxx codes. Detailed breakdowns for manufacturer-specific P1xxx, U-codes, B-codes and C-codes for every major OEM.
Diagnostic Flowcharts
Step-by-step diagnostic decision trees exactly as dealer technicians see them. Know exactly which wire to probe and what reading to expect.
Real-World Confirmed Fixes
Via Identifix Direct-Hit, see the most common verified fixes for specific codes on exact vehicle models — before you start testing.
Freeze Frame Data
See the exact sensor values captured at the moment a fault code was set, critical for reproducing and diagnosing intermittent faults.
Live Data PIDs
Know exactly which live data parameters to monitor and what values indicate a passing or failing component during diagnosis.
TSB Cross-Reference
Automatically cross-reference any code against the latest Technical Service Bulletins — catch known manufacturer issues before spending hours diagnosing.
Sourced from 5 Industry Databases
Our DTC library aggregates data from ALLDATA, AutoData, Haynes Pro, Mitchell1 and Identifix — meaning you get OEM-verified diagnostic strategies alongside real-world repair confirmation.
- ALLDATA: OEM diagnostic flowcharts and TSB cross-reference
- AutoData: Technical test values and component specifications
- Haynes Pro: Step-by-step visual diagnostic guides
- Mitchell1: SureTrack real-world repair data and waveform patterns
- Identifix: 50M+ verified technician-submitted fixes by exact VIN
Diagnostic Data Coverage
Frequently Asked Questions
Auto Fix Data covers all OBD2 P-codes (P0000–P3999), B-codes (Body), C-codes (Chassis), U-codes (Network), and thousands of manufacturer-specific codes from all major OEMs.
Yes. Through our Identifix Direct-Hit integration, each DTC is cross-referenced with real-world confirmed repairs submitted by professional technicians, showing you the most common verified fix before you start testing.
The database is updated daily from ALLDATA, AutoData, Haynes Pro, Mitchell1 and Identifix. New manufacturer-specific codes are added as they are issued by OEMs.
Yes. Where the OEM provides freeze frame parameters for a specific code, we display the expected sensor values at the time the code was set — critical for intermittent fault diagnosis.
Yes. All diagnostic flowcharts are sourced directly from ALLDATA and Haynes Pro OEM data feeds. You see the exact decision trees that dealer technicians use.
Stop Guessing. Start Diagnosing.
Access the full DTC library with flowcharts and real-world fix data — free for 7 days.
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