Engine & fuel system
4 documented faults — symptoms, causes and workshop fixes.
Poor idling
Symptoms
Failure to start.
Cause
Engine control module (ECM) software fault.
Repair
- Install upgraded engine control module (ECM) software.
Data: Motorwise Workshop. Bulletin 2.
Engine malfunction indicator lamp (MIL) illuminated
Symptoms
Engine control module (ECM) in limp home mode. Trouble code stored: P0400.
Cause
Engine control module (ECM) software fault.
Repair
- Install upgraded engine control module (ECM) software.
Data: Motorwise Workshop. Bulletin 3.
Poor cold starting
Overview
- Affects
- All models with 1CD-FTV engine code.
- Fault codes
P0380- Remedy
- Software update
Symptoms
Trouble code stored: P0380.
Cause
Defective glow plugs.
Repair
- Check glow plugs, replace as necessary.
- Re-program ECM with modified software.
Data: Motorwise Workshop. Bulletin 4.
Intermittent power loss on acceleration
Exhaust gas recirculation (EGR) valve not operating properly. Fix: re-program with updated software.
Overview
- Affects
- All models.
- Remedy
- Software update
Symptoms
Engine jerking.
Repair steps
- Check air filter, replace if required.
- Check mass air flow (MAF) sensor, replace if required.
- Clean exhaust gas recirculation (EGR) valve and associated parts.
- Re-program ECM with modified software.
Data: Motorwise Workshop. Bulletin 5.
Brakes
1 documented fault — symptoms, causes and workshop fixes.
Brakes squeal
Overview
- Affects
- All models.
Cause
Replacement brake pads fitted without anti-squeal shims.
Repair
- Ensure brake pad anti-squeal shims are fitted.
- Replacement shims available separately.
Data: Motorwise Workshop. Bulletin 1.
Clutch & gearbox
1 documented fault — symptoms, causes and workshop fixes.
Air conditioning (AC) inefficient
Cause
AC compressor clutch relay faulty.
Repair
- Replace AC compressor clutch relay.
Data: Motorwise Workshop. Bulletin 6.
Glossary
Technical terms used in this guide.
- ECM
- Engine control module — the electronic unit that manages the engine
- EGR
- Exhaust gas recirculation — feeds some exhaust gas back into the intake to cut emissions
- AC
- Air conditioning — the system that cools the cabin
- MAF
- Mass air flow — a sensor that measures how much air the engine is breathing
- Control Module
- A control unit for one of the vehicle's systems (engine, gearbox, brakes, body, and so on)
- Glow Plugs
- Heaters that help a diesel engine start from cold
- Limp Home
- A protective mode that limits power so the vehicle can be driven to a workshop
- Re-Program
- Update the software on a control module using the manufacturer's diagnostic tool
- Relay
- An electrically operated switch
- Trouble Code
- A standardised fault code stored by a control module, read with a diagnostic tool
- Recirculation
- Air-conditioning mode that recirculates cabin air instead of drawing in outside air
Frequently asked questions
What are the common faults with the Toyota Avensis 2.0 D-4D?
This guide contains six workshop bulletins for the Toyota Avensis 2.0 D-4D. Of these, four concern the engine and fuel system and one the brakes. Symptoms, causes, repair steps and part numbers are shown where supplied.
Does every Toyota Avensis 2.0 D-4D have these faults?
No. These are patterns documented across the model by workshops, not predictions for an individual vehicle. Where a fault applies only to certain vehicles or VIN ranges, that is listed with the fault.
Can I check for Toyota Avensis 2.0 D-4D faults myself?
Many of them. The documented symptoms can be seen, heard or felt during a test drive.