P0340 (blink 12, 1ZZ) on Toyota Corolla E120: CAMSHAFT POSITION SENSOR CIRCUIT MALFUNCTION

Short answer: P0340 means “CAMSHAFT POSITION SENSOR CIRCUIT MALFUNCTION”. The car’s computer has found a fault in the EFI 1ZZ-FE system and turns on the Malfunction indicator lamp (Check Engine). First check: workshop check order (RM821E): CHECK CRANK POSITION SENSOR NO.1(CHECK RESISTANCE) -> CHECK HARNESS AND CONNECTOR(ENGINE ECU−CAMSHAFT POSITION -> INSPECT CAMSHAFT.

Code

P0340 · blink 12

System

EFI 1ZZ-FE

Dashboard light

Malfunction indicator lamp (Check Engine)

Applies to

1ZZ-FE 1.8 (PK Altis 2005-08 ZZE122; JDM ZZE122/124, Allex/Runx/Fielder 1.8)

Confidence

high (official Toyota RM821E)

Source

toyotamanuals.gitlab.io

Symptoms and when it is set

1. S No camshaft position sensor signal to engine ECU during cranking S Open in NE− circuit

Likely causes

1. Open or short in camshaft position sensor circuit; Camshaft position sensor; Starter; Engine ECU

What to check, in order

1. Workshop check order (RM821E): CHECK CRANK POSITION SENSOR NO.1(CHECK RESISTANCE) -> CHECK HARNESS AND CONNECTOR(ENGINE ECU−CAMSHAFT POSITION -> INSPECT CAMSHAFT

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

• P0340 · Toyota Passo (1st gen)
• P0340 · Toyota Vitz (1st gen)
• P0340 · Toyota Corolla (11th gen, E170)
• P0340 · Toyota Corolla (10th gen, E140)
• P0340 · Honda City (5th gen, GM2)
• P0340 · Honda Civic (10th gen, FC)
• P0340 · Suzuki Wagon R (Pakistan, K10B)
• P0340 on all cars compared

← P0335/13 P0500/42 →

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.