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Find out about OBDeleven's new features, read educational articles and learn more about the automotive world. Read more.

Blog | OBDeleven

Diagnostics & troubleshooting

P0012 – Intake camshaft timing over-retarded | OBDeleven

A P0012 diagnostic code indicates an intake camshaft timing problem. Here are possible causes, symptoms and troubleshooting tips for P0012.

P0012 – Intake camshaft timing over-retarded (bank 1)

P0335 – Crankshaft position sensor circuit malfunction | OBDeleven

A P0335 diagnostic code indicates a crankshaft position sensor circuit malfunction. Learn possible causes, symptoms and troubleshooting tips for P0335.

P0335 – Crankshaft position sensor "A" circuit malfunction

P0440 – Evaporative emission control system malfunction | OBDeleven

A P0440 diagnostic code indicates the EVAP system malfunction. Learn possible causes, symptoms, and troubleshooting tips for P0440.

P0440 – Evaporative emission control system malfunction

P0135 – Oxygen sensor heater circuit malfunction | OBDeleven

A P0135 diagnostic code indicates a problem with the Oxygen sensor heater circuit. Learn possible causes, symptoms, and troubleshooting tips for P0135.

P0135 – Oxygen sensor heater circuit malfunction (bank 1, sensor 1)

Coding & customizations

New One-Click Apps added in February 2025 | OBDeleven

Explore our latest collection of One-Click Apps added in February 2025. Customize your car's features for a personalized driving experience.

New One-Click Apps added in February 2025

P0449 – EVAP system vent valve/solenoid circuit malfunction | OBDeleven

A P0449 diagnostic code indicates a problem with the EVAP system vent valve/solenoid circuit. Learn possible causes, symptoms, and troubleshooting tips for P0449.

P0449 – Evaporative emission control system vent valve/solenoid circuit malfunction

P0017 – Crankshaft & camshaft misalignment | OBDeleven

A P0017 diagnostic code indicates a problem with the exhaust camshaft and crankshaft timing. Learn possible causes, symptoms, and troubleshooting tips for P0017.

P0017 – Crankshaft & camshaft misalignment (bank 1 sensor “B”)

P0141 – Oxygen sensor heater circuit malfunction | OBDeleven

A P0141 diagnostic code indicates a problem with the Oxygen sensor heater circuit. Learn possible causes, symptoms, and troubleshooting tips for P0141.

P0141 – Oxygen sensor heater circuit malfunction (bank 1, sensor 2)

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