P0016 – Crankshaft/camshaft correlation – bank 1, sensor A

P0016 reports an implausible relationship between crankshaft and camshaft positions on bank 1, sensor A. It concerns the timing relationship between the position signals.

Powertrain · Timing and synchronisation

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Meaning and affected system

The controller compares position information. A discrepancy can require assessment of mechanical timing, fitted camshaft-control mechanisms and signal detection. The code alone does not distinguish these diagnostic paths.

Possible causes

Incorrect mechanical timing is one possibility.
Where applicable, oil condition, oil level and variable camshaft control need investigation.
Sensor or wiring problems need assessment in light of related codes and measurements.

Possible symptoms

The check engine light may appear.
Starting problems, rough running or unusual noises must be established on the vehicle; this code alone proves none of them.

Useful diagnostic considerations

Document accompanying codes, service history and recent timing-system work.
Have oil level and the required oil specification checked against vehicle instructions.
Compare position signals and mechanical timing with manufacturer information; do not choose a chain or sensor replacement from the code alone.

What this code does not prove

P0016 proves neither a stretched timing chain nor a failed camshaft sensor. New abnormal engine noises or marked running problems require prompt professional assessment.

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Sources and interpretation

This explanation was editorially cross-checked against the technical sources below. Manufacturer documents concern particular vehicle applications; their thresholds and repair procedures must not be applied universally.

OBD-II code data: OBDex (CC0 1.0) · 196fddffb6ef

Editorial source review: 16 October 2026.

The causes listed are possibilities without a likelihood ranking. This page cannot replace diagnosis of the vehicle. A code alone confirms neither a failed component nor that continuing to drive is safe. The actual condition, warnings, handbook and applicable manufacturer diagnostics determine the next step.