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Toyota · Honda · Suzuki · fault codes · warning lights · service data
Car trouble? Find out what your car is telling you
UstadFix explains car faults in simple words. Learn what a fault code or warning light means, then open the guide for your car.
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960+Fault codes
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What you can do here
Diagnose without a scanner
Many older Toyotas flash the fault code on the check engine light. We show you how to count it.
Warning lights
What each dashboard light means and what to do next.
Fault codes
Type a code like P0340 and see the meaning in simple words.
Common problems & service
Known problems, oil and fluid amounts, parts numbers and fuses.
Urdu support
Every page is in English and Urdu.
Sources shown
Data comes from service manuals and parts catalogues, with links.
Car guides
Toyota · 2004–2010Toyota Passo (1st gen)Daihatsu Boon M300 · KGC10 / KGC15 / QNC10Fault codes, parts map with Toyota part numbers, common problems, service and fuses.PassoFix →
Toyota · 1999–2005Toyota Vitz (1st gen)SCP10 · 1SZ-FE 1.0Fault codes, warning lights, common problems, fluids and fuses.VitzFix →
Toyota · 2002–2008Toyota Corolla (9th gen, E120)E120 · 2NZ-FE 1.3 / 3ZZ-FE 1.6 / 1ZZ-FE 1.8 · JDM 1NZ-FE 1.5Pakistan and Japan versions: fault codes, warning lights, wiring diagrams, problems, specs and fuses.CorollaFix →
Toyota · 2014+Toyota Corolla (11th gen, E170)E170 · 1.3 2NZ-FE / 1.6 1ZR-FE / 1.8 2ZR-FEPakistan Corolla XLi, GLi, Altis and Grande: warning lights, common problems, service, fluids, parts map and OBD codes.CorollaFix →
Toyota · 2008–2014Toyota Corolla (10th gen, E140)E140 · 1.3 2NZ-FE / 1.6 1ZR-FE / 1.8 1ZZ-FE / 2.0D 2CPakistan Corolla XLi, GLi, Altis and 2.0D: warning lights, common problems, engine specs, parts map and OBD codes.CorollaFix →
Honda · 2009–2021Honda City (5th gen, GM2)GM2 / GM3 · 1.3 i-VTEC / 1.5 i-VTEC (Aspire)Pakistan City 1.3 and 1.5 Aspire: warning lights, common problems, service, fluids, parts map and OBD codes.CityFix →
Honda · 2016–2021Honda Civic (10th gen, FC)FC · 1.8 i-VTEC R18Z1 / 1.5 VTEC Turbo L15B7 · CVTPakistan Civic X 1.8 and 1.5 Turbo: steering rack, A/C and other common problems, warning lights, fluids, fuses and OBD codes.CivicFix →
Suzuki · 2012–2019Suzuki Mehran (EFI, Euro II)SB308 · F8B 796 cc EFI · 4-speed manualMehran VX and VXR EFI: missing and jerking, check-engine light help, service, fluids, fuses and parts map.MehranFix →
Suzuki · 2007–2016Suzuki Cultus (2nd gen, EFI)G10B 993 cc EFI · 5-speed manualCultus VXR and VXL EFI: idle drop, overheating, check-engine light help, specs and parts map.CultusFix →
Suzuki · 2014–presentSuzuki Wagon R (Pakistan, K10B)K10B 998 cc · 5-speed manual or AGSWagon R VXR, VXL and AGS: reverse gear, vibration, A/C, fault codes, service, fuses and parts map.WagonRFix →More cars are coming. Want a guide for your car? Tell us.
Common questions
What is a fault code (DTC)?
When the car computer finds a problem, it saves a short code. This is a diagnostic trouble code (DTC). Example: P0340. The first letter shows the area: P = engine and gearbox, B = body (for example airbag), C = chassis (for example ABS), U = network. The code points to a circuit or sensor to check. It does not always mean that part is broken.
How do I read the code?
There are two ways. 1. OBD scanner: plug a scanner into the 16-pin socket under the dashboard, turn the ignition ON and read the code. 2. Blink codes: many older Toyotas can flash the code on the check engine light. You join two pins in the same socket with a short wire, turn the ignition ON and count the flashes. Long flashes are tens, short flashes are units. The exact steps are on the Fault codes page of each car guide.
What do the dashboard warning lights mean?
The colour tells you how urgent it is. Red = stop safely and check now (for example brake, oil pressure, battery charge). Amber/yellow = get it checked soon (for example check engine, ABS, airbag). Green or blue = information only (for example high beam). Each car guide lists every light for that car and what to do.
Basic safety
- If a red light comes on while driving, slow down, stop in a safe place and switch off the engine.
- If the oil pressure light comes on, stop the engine at once. Driving on can wreck the engine.
- If the temperature is high, do not open the radiator cap while the engine is hot.
- Do not drive with weak or soft brakes.
- Clearing a code does not fix the fault. If the code comes back, the problem is still there.
- This site is a guide. For brakes, airbags and steering, get a trained mechanic to check the car.