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DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2015SILVERADO 1500 HIGH COUNTRY, 5.3L ENG VIN C, RWD, GASREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXENGINE CONTROLS/FUEL - 6.6L (LML) - DIAGNOSTIC TROUBLE CODES
2015 Chevrolet Silverado 1500 High Country, 5.3L Eng VIN C, RWD, Gas
Engine Controls/Fuel - 6.6L (LML) - Diagnostic Trouble Codes
2015 Chevrolet Silverado 1500 High Country, 5.3L Eng VIN C, RWD, GasSECTION Engine Controls/Fuel - 6.6L (LML) - Diagnostic Trouble Codes
ENGINE CONTROLS/FUEL - 6.6L (LML) - DIAGNOSTIC TROUBLE CODES
| DTC | Description |
|---|---|
| DTC P0016 | Crankshaft Position - Camshaft Position Not Plausible |
| DTC P003A | Turbocharger Vane Position Not Learned |
| DTC P0045, P0047, P0048, P006E, or P006F | Turbocharger Boost Control Solenoid |
| DTC P007C or P007D | Charge Air Cooler (CAC) Temperature Sensor |
| DTC P0087 or P0088 | Fuel Rail Low/High Pressure |
| DTC P008F | Engine Coolant Temperature (ECT) - Fuel Temperature Not Plausible |
| DTC P0090-P0092, P00C9, or P00CA | Fuel Pressure Regulator 1 |
| DTC P0097 or P0098 | Intake Air Temperature (IAT) Sensor 2 |
| DTC P00EA or P00EB | Intake Air Temperature (IAT) Sensor 3 |
| DTC P00F4-P00F6 | Intake Air Humidity Sensor |
| DTC P0101 | Mass Air Flow (MAF) Sensor |
| DTC P0102 or P0103 | Mass Air Flow (MAF) Sensor |
| DTC P0106 | Manifold Absolute Pressure (MAP) Sensor |
| DTC P0107 or P0108 | Manifold Absolute Pressure (MAP) Sensor |
| DTC P0112 or P0113 | Intake Air Temperature (IAT) Sensor 1 |
| DTC P0117 or P0118 | Engine Coolant Temperature (ECT) Sensor |
| DTC P0128 | Engine Coolant Temperature (ECT) Below Thermostat Temperature |
| DTC P0131, P0132, P0137, P0138, P11A6, P11A9, P11AF, P11B2, P11B4, or P11B5 | HO2S Voltage Sensor 1/2 |
| DTC P014C | HO2S Slow Response Rich to Lean Sensor 1 |
| DTC P0171 or P0172 | Fuel System Lean/Rich |
| DTC P0182 or P0183 | Fuel Temperature Sensor Voltage Low/High |
| DTC P0191 | Fuel Rail Pressure Sensor Performance |
| DTC P0192 or P0193 | Fuel Rail Pressure Sensor Low/High Voltage |
| DTC P01CC, P01CE, P01D0, P01D2, P01D4, P01D6, P01D8, P01DA, P01CB, P01CD, P01CF, P01D1, P01D3, P01D5, P01D7, or P01D9 | Cylinder 1-8 Injection Timing Advanced/Retarded |
| DTC P01F0 | Coolant Temperature Dropped Below Diagnostic Monitoring Temperature |
| DTC P0201, P0202, P0203, P0204, P0205, P0206, P0207, or P0208 | Cylinder 1-8 Injector Control |
| DTC P0234 | Engine Overboost |
| DTC P0263, P0266, P0269, P0272, P0275, P0278, P0281, or P0284 | Cylinder 1-8 Balance System |
| DTC P026A | Charge Air Cooler (CAC) Low Efficiency |
| DTC P026C or P026D | Injection Quantity Too Low/High |
| DTC P0299 | Engine Underboost |
| DTC P02CD, P02CF, P02D1, P02D3, P02D5, P02D7, P02D9, or P02DB | Cylinder 1-8 Injector Exceeded Learning Limit |
| DTC P02E0, P02E2, P02E3, P02EB, P122C, P122E, or P122F | Intake Air Flow Valve 1/2 Voltage |
| DTC P02E7-P02E9 | Intake Air Flow Valve Position Sensor |
| DTC P0300-P0308 | Engine Misfire 1-8 |
| DTC P0315 | Crankshaft Position System Variation Not Learned |
| DTC P0335 or P0336 | Crankshaft Position Sensor |
| DTC P0340 or P0341 | Camshaft Position Sensor |
| DTC P0381 | Wait to Start Indicator Control Circuit |
| DTC P0400 | Exhaust Gas Recirculation (EGR) Flow Incorrect |
| DTC P0401 or P0402 | Exhaust Gas Recirculation (EGR) Flow Insufficient/Excessive |
| DTC P0403, P0489, P0490, P1407, P140D, P140E, or P140F | Exhaust Gas Recirculation (EGR) Motor |
| DTC P0405 or P0406 | Exhaust Gas Recirculation (EGR) Position Sensor |
| DTC P040C or P040D | Exhaust Gas Recirculation (EGR) Temperature Sensor 2 |
| DTC P040F | Exhaust Gas Recirculation (EGR) Temperature Sensors 1-2 Not Plausible |
| DTC P041C or P041D | Exhaust Gas Recirculation (EGR) Temperature Sensor 1 Low/High Voltage |
| DTC P0420 | Catalyst System Low Efficiency |
| DTC P046C | Exhaust Gas Recirculation (EGR) Position Sensor Performance |
| DTC P049D | Exhaust Gas Recirculation (EGR) Position Not Learned |
| DTC P0506 or P0507 | Idle Speed Low/High |
| DTC P0545, P0546, P2032, P2033, P242C, P242D, P2470, or P2471 | Exhaust Gas Temperature Sensor 1-4 Low/High Voltage |
| DTC P054E or P054F | Idle Control - Fuel Quantity Lower/Higher Than Expected |
| DTC P057B-P057D | Brake Pedal Position Sensor |
| DTC P0601, P0602, P0606, P060B, P061C, P062F, P2610, or P262B | Control Module Memory |
| DTC P0640 | Intake Air Heater |
| DTC P0641, P0651, P0697, P06A3, P06D2, or P06D6 | 5 V Reference 1-5 |
| DTC P064C | Glow Plug Control Module |
| DTC P0650 | Malfunction Indicator Lamp (MIL) |
| DTC P0700 | Transmission Control Module Requested MIL Illumination |
| DTC P1043, P1044, P208A, P208C, or P208D | Reductant Pump |
| DTC P1045, P1046, P20A0, P20A2, or P20A3 | Reductant Purge Valve |
| DTC P1048, P1049, or P2047-P2049 | Reductant Injector Control |
| DTC P1082 | Fuel Filter Pressure Switch |
| DTC P1089 | Fuel Rail Pressure Performance During Deceleration Fuel Cut-Off |
| DTC P10CC or P20CB | Exhaust Aftertreatment Fuel Injector Control |
| DTC P10CD, P10CE, P20CD, or P20CE | Exhaust Aftertreatment Fuel Injector High Control Voltage |
| DTC P10CF | Charge Air Cooler Temperature - Intake Air Temperature (IAT) Sensor 3 Correlation |
| DTC P10D0 | Reductant Injector Temperature - Exhaust Gas Temperature 2 Not Plausible |
| DTC P113A or P20E2 | Exhaust Gas Temperature Sensors 1-2/3-4 Not Plausible |
| DTC P11CB or P11CC | NOx Sensor 1 Performance - Signal High/Low |
| DTC P11D7 or P22FE | NOx Sensor 2 Performance |
| DTC P11DB or P11DC | NOx Sensor 1/2 Current Performance |
| DTC P1224, P1227, P122A, P1233, P1236, P1239, P1242, or P1247 | Cylinder 1-8 Injector Control |
| DTC P122D | Intake Air Flow Position Sensor Exceeded Learning Limit |
| DTC P125A, P125B, or P2294-P2296 | Fuel Pressure Regulator 2 |
| DTC P128E | Fuel Rail Pressure Performance |
| DTC P1400 | Cold Start Emission Reduction Control System |
| DTC P140B or P140C | Exhaust Gas Recirculation (EGR) Slow Response - Increasing/Decreasing Flow |
| DTC P1411-P1414, P245A, P245C, or P245D | Exhaust Gas Recirculation (EGR) Cooler Bypass Valve |
| DTC P144B, P144C, P24A0, or P24A1 | Closed Loop Diesel Particulate Filter (DPF) Regeneration Control |
| DTC P150C | Transmission Control Module Engine Speed Request Signal Message Counter |
| DTC P154A | Intake Air Heater Feedback |
| DTC P154B | Intake Air Heater Voltage |
| DTC P154C | Intake Air Heater |
| DTC P154D | Intake Air Heater Temperature |
| DTC P1591 | Body Control Module Engine Speed Request Signal Message Counter |
| DTC P160C, P268A, P268C-P268F, or P2690-P2693 | Injector 1-8 Calibration |
| DTC P161A | Glow Plug Control Module Not Programmed |
| DTC P163C | Glow Plug Control Module Primary Circuit |
| DTC P163D | Glow Plug Control Module Secondary Circuit |
| DTC P166B | Intake Air Heater Over Temperature |
| DTC P16A0-P16A2 | Sensor Communication Circuit |
| DTC P16A8 | Glow Plug Control Module Temperature - Intake Air Heater Temperature Not Plausible |
| DTC P16AA or P16AB | Intake Air Heater Temperature Sensor Circuit Low Voltage |
| DTC P16AD or P16AE | Glow Plug Control Module Temperature Sensor |
| DTC P2002 | Diesel Particulate Filter Efficiency |
| DTC P202E | Reductant Injector Performance |
| DTC P203B-P203D, P21AA, P21AB, P21AF, or P21B0 | Reductant Level Sensor 1-3 |
| DTC P204B | Reductant Pressure Sensor |
| DTC P204C or P204D | Reductant Pressure Sensor |
| DTC P204F, P20E8, or P20E9 | Reductant System Low/High Pressure |
| DTC P205B-P205D | Reductant Tank Temperature Sensor |
| DTC P2080, P2084, P242B, or P246F | Exhaust Gas Temperature Sensor 1-4 |
| DTC P208B | Reductant Pump |
| DTC P20A1 | Reductant Purge Valve |
| DTC P20B9-P20BF or P20C0-P20C4 | Reductant Heater 1-3 |
| DTC P20CC | Exhaust Aftertreatment Fuel Injector |
| DTC P20EE, P249D, P249E, or P2BAD | NOx Catalyst Efficiency Below Threshold/Closed Loop Reductant Injection Control |
| DTC P2122, P2123, P2127, P2128, or P2138 | Accelerator Pedal Position (APP) Sensor 1-2 |
| DTC P2146, P2149, P2152, or P2155 | Injector High Control Circuit Group 1-4 |
| DTC P214F, P21DD, or P221C-P221F | Reductant Heater 1-3 |
| DTC P2199 | Intake Air Temperature (IAT) Sensor 1-2 Correlation |
| DTC P2200, P2202, P2203, P229E, P22A0, or P22A1 | NOx Sensor 1-2 |
| DTC P2201 or P22FA | NOx Sensor 1 Performance |
| DTC P2205, P2209, P22A3, or P22A7 | NOx Sensor 1-2 Heater |
| DTC P220A or P220B | NOx Sensor 1-2 Voltage |
| DTC P2228 or P2229 | Barometric Pressure (BARO) Sensor |
| DTC P2263 | Turbocharger Boost System |
| DTC P2266 | Water in Fuel Sensor |
| DTC P229F | NOx Sensor 2 Performance |
| DTC P2428 | Exhaust Gas High Temperature |
| DTC P2453 | Diesel Particulate Filter (DPF) Differential Pressure Sensor |
| DTC P2454 or P2455 | Diesel Particulate Filter Differential Pressure Sensor |
| DTC P2457 | Exhaust Gas Recirculation (EGR) Cooler Low Efficiency |
| DTC P2459 | Diesel Particulate Filter Regeneration Too Often |
| DTC P2463 | Diesel Particulate Filter Soot Level Accumulation |
| DTC P2493 | Exhaust Gas Recirculation (EGR) Cooler Bypass Position Sensor |
| DTC P2494 or P2495 | Exhaust Gas Recirculation (EGR) Cooler Bypass Position Sensor |
| DTC P24C4 | Exhaust Gas Recirculation (EGR) Cooler Bypass Position Sensor |
| DTC P2510 | Engine Control Module Relay |
| DTC P2544 | Transmission Torque Request Signal Message Counter |
| DTC P2564 or P2565 | Turbocharger Vane Position Sensor |
| DTC P2598 or P2599 | Turbocharger Boost Control Position |
| DTC P25BD | Unmetered Fuel - Forced Engine Shutdown |
| DTC P2632-P2634 | Fuel Transfer Pump Relay |
| DTC P2636 | Fuel Transfer Pump Flow Insufficient |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.