Safety Warning
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.
Engine Performance DTCS
/Performance Problem P0117 6 ECT Circuit Low Voltage Input P0118 6 ECT Circuit High Voltage Input P0122 7 Throttle Position (TP) Circuit Low Voltage Input P0123 7 TP Circuit High Voltage Input P0131 1 Left HO2S-1 Low Voltage P0131 2 Right HO2S-1 Low Voltage P0132 1 Left HO2S-1 High Voltage P0132 2 Right HO2S-1 High Voltage P0133 61 Left HO2S-1 Slow Response P0133 62 Right HO2S-1 Slow Response P0135 41 Left HO2S-1 Heater Circuit Malfunction P0135 42 Right HO2S-1 Heater Circuit Malfunction P0135 65 HO2S-2 Heater Circuit Malfunction P0137 63 HO2S-2 Low Voltage P0138 63 HO2S-2 High Voltage P0139 63 HO2S-2 Slow Response P0171 45 System Too Rich (Left Bank) P0171 45 System Too Lean (Left Bank) P0171 46 System Too Lean (Right Bank) P0171 46 System Too Rich (Right Bank) P0325 23 Left KS Circuit Malfunction P0325 53 Rt Knock Sensor (KS) Circuit Malfunction P0335 4 Crankshaft Position (CKP) Sensor No Signal Input P0335 4 CKP Sensor Circuit Range/Performance P0335 9 CYP Sensor No Signal P0335 9 CYP Sensor Intermittent Interruption P0335 54 CKF Sensor No Signal P0335 54 Crankshaft Speed Fluctuation (CKF) Sensor Intermittent Interruption P0335 59 CYP No. 2 Sensor Circuit Fault P0335 59 CYP No 2 Sensor Range/Performance Problem P0401 80 EGR Insufficient Flow Detected P0420 67 Catalyst System Efficiency Below Threshold P0452 91 EVAP Control (Fuel Tank) Pressure Sensor Low Voltage P0453 91 EVAP Control (Fuel Tank) Pressure Sensor High Voltage P0505 14 Idle Control System Malfunction P1106 13 Barometric Pressure Circuit Range/Performance Problem P1107 13 Barometric Pressure Circuit Low Voltage Input P1107 13 Barometric Pressure Circuit High Voltage Input P1121 7 Throttle Position Lower Than Expected P1122 7 Throttle Position Higher Than Expected P1128 5 Manifold Absolute Pressure Lower Than Expected P1129 5 Manifold Absolute Pressure Higher Than Expected P1201 71 Cyl. No. 1 Misfire Detected (Ignition Related) P1201 71 Cyl No. 1 Misfire Detected (Fuel Related) P1201 72 Cyl. No. 2 Misfire Detected (Ignition Related) P1201 72 Cyl No. 2 Misfire Detected (Fuel Related) P1201 73 Cyl. No. 3 Misfire Detected (Ignition Related) P1201 73 Cyl No. 3 Misfire Detected (Fuel Related) P1201 74 Cyl. No. 4 Misfire Detected (Ignition Related) P1201 74 Cyl No. 4 Misfire Detected (Fuel Related) P1201 75 Cyl. No. 5 Misfire Detected (Ignition Related) P1201 75 Cyl No. 5 Misfire Detected (Fuel Related) P1201 76 Cyl. No. 6 Misfire Detected (Ignition Related) P1201 76 Cyl No. 6 Misfire Detected (Fuel Related) P1300 71-76 Random Misfire Detected P1301 71 Random Misfire Detected P1302 72 Random Misfire Detected P1303 73 Random Misfire Detected P1304 74 Random Misfire Detected P1305 75 Random Misfire Detected P1306 76 Random Misfire Detected P1316 79 Spark Plug Voltage Detection Circuit Malfunction (Left Bank) P1316 79 Spark Plug Voltage Detection Circuit Malfunction (Right Bank) P1318 79 Spark Plug Voltage Detection Module Reset Malfunction (Left Bank) P1318 79 Spark Plug Voltage Detection Module Reset Malfunction (Right Bank) P1456 90 EVAP Sys Leak Detected (Fuel Tank Area) P1456 90 EVAP System Leak Detected (Canister Area) P1491 12 EGR Valve Insufficient Lift Detected P1498 12 EGR Valve Lift Sensor High Voltage P1508 14 Idle Air Control (IAC) Valve Circuit Failure P1607 - PCM Internal Failure
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.