Engine & fuel system
1 documented fault — symptoms, causes and workshop fixes.
Strong sulphur odour from exhaust whilst engine running
Overview
- Affects
- All models with 1.8 petrol engine.
- Fault codes
P0420- Remedy
- Software update
Symptoms
Engine malfunction indicator lamp (MIL) illuminated. Trouble code stored: P0420.
Cause
Incorrect engine management parameters due to engine control module (ECM) software fault.
Repair
- Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
- If no fault(s) found: Re-program ECM with upgraded software.
Data: Motorwise Workshop. Bulletin 3.
Electrical & ignition
1 documented fault — symptoms, causes and workshop fixes.
One or both headlamps do not operate when switched on
Cause
Internal failure of combination switch.
Repair
- Replace combination switch.
Data: Motorwise Workshop. Bulletin 4.
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.
Steering
1 documented fault — symptoms, causes and workshop fixes.
ESP warning lamp illuminated
Incorrect calibration of steering angle sensor.
Overview
- Affects
- All models with electronic stability program (ESP).
- Fault codes
C1288
Symptoms
Trouble code stored: C1288. Unable to program steering angle sensor.
Repair steps
- Ensure steering in straight-ahead position.
- Ensure steering angle sensor aligned with steering column.
- Carry out steering angle sensor calibration.
Data: Motorwise Workshop. Bulletin 2.
Other
1 documented fault — symptoms, causes and workshop fixes.
Excessive noise from auxiliary drive belt
Overview
- Affects
- All models with 1ZZ-FE engine code.
Cause
Faulty auxiliary drive belt tensioner.
Repair
- Renew auxiliary drive belt tensioner.
- Renew auxiliary drive belt.
Data: Motorwise Workshop. Bulletin 5.
Glossary
Technical terms used in this guide.
- MIL
- Malfunction indicator lamp — the engine warning light on the dashboard
- ECM
- Engine control module — the electronic unit that manages the engine
- ESP
- Electronic stability programme — brakes individual wheels to stop a skid
- Control Module
- A control unit for one of the vehicle's systems (engine, gearbox, brakes, body, and so on)
- Re-Program
- Update the software on a control module using the manufacturer's diagnostic tool
- Steering Angle Sensor
- Tells the stability-control system which way the steering wheel is pointing
- Trouble Code
- A standardised fault code stored by a control module, read with a diagnostic tool
- Auxiliary Drive Belt
- The belt that drives the alternator, water pump, steering pump or air-conditioning compressor
- Calibration
- Setting a sensor or module so its readings match the real world
Frequently asked questions
What are the common faults with the Toyota Corolla Verso CombiVan 1.8?
This guide contains five workshop bulletins for the Toyota Corolla Verso CombiVan 1.8. Of these, one concerns the engine and fuel system and one the electrical and ignition. Symptoms, causes, repair steps and part numbers are shown where supplied.
Does every Toyota Corolla Verso CombiVan 1.8 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 Corolla Verso CombiVan 1.8 faults myself?
Many of them. The documented symptoms can be seen, heard or felt during a test drive.