P1146 – Jaguar DTC

Jaguar DTC P1146 – Alternator – charge circuit low

DTC P1146 meaning on Jaguar

1. DTC P1146 indicates a low voltage condition in the alternator charge circuit on a Jaguar vehicle.

Jaguar DTC P1146 symptoms

• Dimming or flickering lights on the dashboard.
• Battery warning light illuminated on the instrument cluster.
• Battery not charging properly.

Jaguar DTC P1146 causes

• Defective alternator.
• Worn-out alternator belt.
• Faulty wiring or connections in the charging circuit.

Jaguar DTC P1146 seriousness

1. If left unresolved, DTC P1146 can lead to a discharged battery and potential stalling of the vehicle.

How to diagnose DTC P1146 on Jaguar

1. Check the alternator output voltage using a multimeter.
2. Inspect the alternator belt for wear and proper tension.
3. Test the wiring and connections in the charging circuit for continuity and proper voltage.

How to fix DTC P1146 on Jaguar

1. Replace the alternator if it is found to be faulty.
2. Replace the alternator belt if worn or damaged.
3. Repair or replace any damaged wiring or connectors in the charging circuit.

How to erase DTC P1146 on Jaguar

1. After fixing the underlying issue, use an OBD-II scanner to clear the DTC P1146 code from the vehicle’s computer.

Recommended tools for Jaguar diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.