Parts for your 2012 Toyota Crown-Crank angle sensor

2012 Toyota Crown crank angle sensor – what it does and how to look after it

Technical sources confirm the 2012 Toyota Crown is fitted with a crank angle sensor (also called a crankshaft position sensor). The Toyota Electronic Parts Catalogue lists “Sensor, Crank Position” for GRS20# Crown variants (commonly part 90919‑05059 on GR-series V6 engines, always confirm by VIN). Toyota’s Crown S200 repair manual engine control section also details inspection procedures for the crankshaft position sensor, and DENSO’s OE catalogues list the matching CKP for these engines. Even the Hybrid model uses a crank sensor to sync engine start and combustion timing.

On this model, the crank angle sensor reads a toothed wheel on the crankshaft and feeds precise position and speed data to the ECU. That data is the heartbeat for spark timing, fuel injection, variable valve timing and start-up control. If it goes out of whack, the Crown can become hard to start, stall at idle, misfire, or throw the check engine lamp with codes like P0335/P0339. Fuel economy and drivability take a hit when the ECU loses that clean signal.

There’s no routine replacement interval in Toyota’s schedules, the sensor is usually a fit‑and‑forget item. As sensible servicing for a 2012 Crown, it’s worth:

• Scanning for stored or intermittent crank sensor fault codes during regular services.
• Inspecting the harness and connector under the bonnet for oil ingress, corrosion or chafing.
• Keeping engine oil changes on time — clean oil helps keep the reluctor area free of sludge.

If replacement is needed, choose quality OE or OE‑equivalent. On GR V6s the sensor sits on the block by the transmission bellhousing area, access varies by body and drivetrain. Expect a single retaining bolt, typical torque is in the 8–10 N·m range — check the specific manual for the exact spec. A light smear of clean engine oil on the O‑ring helps installation. After refitting, clear codes and verify live data shows steady engine speed while cranking. No special relearn is normally required on these Toyotas, but a short road test and a warm idle check are good practice.

Owners chasing erratic stalling or long cranks after hot soaks should consider the CKP high on the list once the basics (battery, grounds, coils) are ruled out. Getting the signal right keeps the Crown smooth, efficient and happy across Aussie and Kiwi kilometres.

Popular questions

Where is the crank angle sensor on a 2012 Toyota Crown?

On GR-series V6 Crowns it’s mounted low on the engine block near the transmission bellhousing area, reading a reluctor on the crankshaft. Exact access depends on the specific variant and drivetrain layout, so using the VIN in the parts catalogue or a workshop manual diagram helps pinpoint it quickly.

What are the symptoms of a failing crank angle sensor on this model?

Common signs include extended cranking or no-start, intermittent stalling (especially when hot), misfires, rough idle, and the check engine light with codes such as P0335 or P0339. Live data may show erratic or zero engine speed while cranking when the sensor is acting up.

Does it need routine replacement, and can it be changed at home?

There’s no scheduled replacement, it’s replaced on condition. A competent DIYer can usually handle it with basic tools and care around the sensor O‑ring and bolt torque. Clearing fault codes and confirming a clean RPM signal afterwards is part of the job.