Faulty VVT sensor (bank 2) due to internal failure or contamination; Damaged or corroded wiring harness and connector at the VVT sensor or ECM; Oil sludge or debris blocking the sensor pickup or oil control valve, affecting signal accuracy; Failed VVT oil control valve (OCV) for bank 2, causing incorrect camshaft positioning; ECM internal fault, though this is less common and should be diagnosed last; Engine oil level or pressure issues that prevent proper VVT operation

DTC codes / Toyota codes / P1350

P1350 · ToyotaVVT Sensor Circuit Malfunction Bank 2

Q: What does code P1350 mean?

VVT Sensor Circuit Malfunction Bank 2. P1350 on Toyota vehicles means the engine control module (ECM) has detected an electrical fault in the variable valve timing (VVT) sensor circuit for bank 2, which is the cylinder bank that does not contain cylinder number one. The ECM monitors the sensor signal and flags this code when the voltage or signal pattern falls outside the expected range for the current engine operating conditions.

P1350 on Toyota vehicles means the engine control module (ECM) has detected an electrical fault in the variable valve timing (VVT) sensor circuit for bank 2, which is the cylinder bank that does not contain cylinder number one. The ECM monitors the sensor signal and flags this code when the voltage or signal pattern falls outside the expected range for the current engine operating conditions.

SystemPowertrain

Code typeToyota specific

SeverityMedium

Fix difficultyIntermediate

AreaIgnition system and misfire

Symptoms you may notice

Illumination of the check engine light, often with no other symptoms noticed by the driver
Rough idle or engine misfire, particularly when the engine is cold or under light load
Reduced engine power or sluggish acceleration due to incorrect camshaft timing
Poor fuel economy as the ECM defaults to a fixed timing strategy
In rare cases, the engine may stall or be hard to start when the VVT system is disabled

Common causes, most likely first

Faulty VVT sensor (bank 2) due to internal failure or contamination
Damaged or corroded wiring harness and connector at the VVT sensor or ECM
Oil sludge or debris blocking the sensor pickup or oil control valve, affecting signal accuracy
Failed VVT oil control valve (OCV) for bank 2, causing incorrect camshaft positioning
ECM internal fault, though this is less common and should be diagnosed last
Engine oil level or pressure issues that prevent proper VVT operation

How to diagnose and fix it

Connect a scan tool and record all stored and pending codes, then clear codes and test-drive to see if P1350 returns
Visually inspect the bank 2 VVT sensor connector and wiring for damage, corrosion, or loose pins
Measure the resistance and voltage signal of the VVT sensor with a multimeter and compare to Toyota specifications
Check engine oil level and condition, and inspect the VVT oil control valve for sludge or blockage
Swap the bank 2 VVT sensor with a known-good unit from bank 1 (if accessible) to see if the code moves
Perform a live data check of the VVT sensor signal and camshaft timing while revving the engine to confirm erratic behavior
If all electrical and mechanical checks pass, follow Toyota diagnostic flowcharts to test the ECM and replace if necessary

Don't overlook oil maintenance and wiring

A dirty or sludged engine oil system is a frequent hidden cause of P1350 on Toyotas, as the VVT sensor relies on clean oil for accurate signal; regular oil changes are critical.
The VVT sensor connector is prone to corrosion from road splash or engine degreaser, so always inspect the pins and seals before condemning the sensor.
P1350 can be set by a failing VVT oil control valve that alters camshaft timing without triggering a separate OCV code, so test the OCV if the sensor checks out.
On some Toyota engines, a stretched timing chain can cause the VVT sensor signal to deviate enough to set P1350, so check timing chain condition if mileage is high.
Do not replace the ECM based solely on P1350; perform all wiring and component tests first, as ECM failure is rare and expensive.

Can I keep driving with P1350?

You can usually drive with P1350, but avoid heavy acceleration and prolonged high-speed driving because the engine may enter a limp mode with reduced power and poor fuel economy. Have the fault diagnosed soon to prevent potential catalytic converter damage from incorrect timing.

Tools that help

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Guidance is general and written for Toyota vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.