P0136 on Toyota Vitz (SCP10): Rear oxygen sensor circuit

Short answer: P0136 means “Rear oxygen sensor circuit”. The car’s computer has found a fault in the Engine - O2 system and turns on the Check engine light (MIL). First check: check sensor connector and wiring.

Code

P0136

System

Engine - O2

Dashboard light

Check engine light (MIL)

Also sold as

Toyota Yaris, Toyota Echo (XP10)

Applies to

1SZ-FE (by platform)

Confidence

medium (Toyota Echo 1999–2002 factory diagnostics, same XP10 platform; not confirmed on JDM 1SZ-FE)

Source

carmanualsclub.com

Likely causes

1. Open or short in rear oxygen sensor circuit
2. Rear oxygen sensor

What to check, in order

1. Check sensor connector and wiring
2. Replace sensor if signal is dead

Related on this car

• All fault codes for this car
• Warning lights
• Where the parts are (parts map)
• Common problems

Same code on other cars

• P0136 · Toyota Passo (1st gen)
• P0136 · Toyota Corolla (9th gen, E120)
• P0136 · Toyota Corolla (11th gen, E170)
• P0136 · Toyota Corolla (10th gen, E140)
• P0136 · Honda City (5th gen, GM2)
• P0136 · Honda Civic (10th gen, FC)
• P0136 · Suzuki Wagon R (Pakistan, K10B)
• P0136 on all cars compared

← P0135 P0141 →

Clearing the code does not fix the fault. If it comes back, the problem is still there. For brakes, airbags and steering, see a trained mechanic.