STEP Diagnostics
Diagnostic Library
Vehicle-specific DTC guides organized by model, engine, system, and diagnostic code.
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Combine vehicle, DTC, and system filters to find configurations with published guides.
Showing 20 of 20 vehicle configurations
Chevrolet
2020-2025 Chevrolet Silverado 2500 6.6 diesel
54 published diagnostic guides across 47 DTC codes. Current source coverage: 2022 Chevrolet Silverado 2500 6.6 diesel.
GMC
2014-2018 GMC Sierra 1500 5.3 gas
31 published diagnostic guides across 31 DTC codes. Current source coverage: 2014-2018 Gmc Sierra 1500 5.3 gas.
Chevrolet
2019-2025 Chevrolet Silverado 1500 5.3 gas
35 published diagnostic guides across 31 DTC codes. Current source coverage: 2019-2025 Chevrolet Silverado 1500 5.3 gas.
Ford
2011-2022 Ford F250 Superduty 6.2 Gas
15 published diagnostic guides across 12 DTC codes. Current source coverage: 2011-2022 Ford F250 Superduty 6.2 Gas.
Ford
2011-2025 Ford F250 Superduty 6.7 Power Stroke Diesel
25 published diagnostic guides across 21 DTC codes. Current source coverage: 2011-2025 Ford F250 Superduty 6.7 Power Stroke Diesel.
Ford
2015-2025 Ford F150 2.7 EcoBoost
87 published diagnostic guides across 63 DTC codes. Current source coverage: 2015-2025 Ford F150 2.7 EcoBoost.
Ford
2015-2025 Ford F150 3.5 EcoBoost
18 published diagnostic guides across 18 DTC codes. Current source coverage: 2015-2025 Ford F150 3.5 EcoBoost.
Ford
2015-2025 Ford F150 5.0 CoyoteGas
17 published diagnostic guides across 17 DTC codes. Current source coverage: 2015-2025 Ford F150 5.0CoyoteGas.
Ford
2020-2025 Ford F250 Superduty 7.3 GodzillaGas
13 published diagnostic guides across 13 DTC codes. Current source coverage: 2020-2025 Ford F250 Superduty 7.3GodzillaGas.
Ram
2019-2024 Ram 1500Classic 3.6 PentastarGas
32 published diagnostic guides across 32 DTC codes. Current source coverage: 2019-2024 Ram 1500Classic 3.6PentastarGas.
Ram
2019-2024 Ram 1500Classic 5.7 HEMIGas
29 published diagnostic guides across 29 DTC codes. Current source coverage: 2019-2024 Ram 1500Classic 5.7HEMIGas.
Ram
2019-2024 Ram 1500DT 5.7 HEMIGas
37 published diagnostic guides across 37 DTC codes. Current source coverage: 2019-2024 Ram 1500DT 5.7HEMIGas.
Ram
2019-2025 Ram 1500DT 3.6 PentastarGas
40 published diagnostic guides across 40 DTC codes. Current source coverage: 2019-2025 Ram 1500DT 3.6PentastarGas.
Ram
2019-2025 Ram 2500HD 6.4 HEMIGas
28 published diagnostic guides across 28 DTC codes. Current source coverage: 2019-2025 Ram 2500HD 6.4HEMIGas.
Honda
2010-2015 Honda Civic 1.8 Gas
140 published diagnostic guides across 138 DTC codes. Current source coverage: 2010-2015 Honda Civic 1.8 Gas.
Honda
2010-2017 Honda Accord 2.4 Gas
136 published diagnostic guides across 134 DTC codes. Current source coverage: 2010-2017 Honda Accord 2.4 Gas.
Ram
2025-2025 Ram 1500DT 3.0 HurricaneGas
1 published diagnostic guide across 1 DTC code. Current source coverage: 2025-2025 Ram 1500DT 3.0HurricaneGas.
Honda
2010-2016 Honda Cr V 2.4 Gas
110 published diagnostic guides across 109 DTC codes. Current source coverage: 2010-2016 Honda Cr V 2.4 Gas.
Honda
2016-2024 Honda Civic 1.5 TurboGas
88 published diagnostic guides across 87 DTC codes. Current source coverage: 2016-2024 Honda Civic 1.5TurboGas.
Honda
2020-2025 Honda Cr V 2.0 Hybrid
60 published diagnostic guides across 60 DTC codes. Current source coverage: 2020-2025 Honda Cr V 2.0Hybrid.