Hi guys hope you can help. My is250 (2008 auto) initially had a low rail pressure error and discovered the fuel pump was dead. After replacing pump which worked I now have another code C1201 and one that talks about throttle error. Cirrently when you accelerate the vehicle makes a whizzy sound, weak revs and the vsc and check engine lights are on. What could be the issue. The car is in limp mode as we speak

 

C1201 is, in most cases, a nothing code. It's a VSC code stating that VSC is off because there is an engine code.

So the question is, what's the other code, as it's the actual code.

Jeff

 

Hi Jeff

The code is P2118

 

P2118: Open in ETCS power source (+BM) circuit

Trouble Area:

• Open in ETCS power source circuit
• ETCS fuse
• ECM

Description:
The ETCS (Electronic Throttle Control System) has a dedicated power supply circuit. When the monitored voltage (+BM) is low (less than 4 V), the ECM determines that there is a malfunction in the ETCS and cuts off the current to the throttle actuator.

When the voltage becomes unstable, the ETCS itself becomes unstable. For this reason, when the voltage is low, the current to the throttle actuator is cut. If repairs are made and the system returns to normal, turn the engine switch off. The ECM then allows the current to flow to the throttle actuator so that it can be restarted.

The ECM monitors the battery supply voltage applied to the throttle actuator. When the power supply voltage (+BM) drops below 4 V for 0.8 seconds or more, the ECM interprets this as an open in the power supply circuit (+BM). The ECM illuminates the MIL and sets the DTC. If the malfunction is not repaired successfully, the DTC is set 5 seconds after the engine is next started.

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Check your ETCS fuse and any connectors that were touched during previous repairs to ensure nothing was cut, nicked, or damaged and that everything is connected properly.

Jeff

 

Hi Jeff

Am struggling to find the

1. ETCS fuse

My fuse box doesn't correspond with the cover. Have tried to go in the internet for fuse lay out with no luck... See attached my fuse box

 

The ETCS fuse is in the other fuse box on the LH side of the engine bay.

Jeff

 

Thread kinda died but here is one with a blown ETCS fuse...
https://www.clublexus.com/forums/is-...line-wire.html

 

Okay thanks will check For second box

 

He Jeff thanks a mill found second fuse box under one if the covers, the fuse was blown and manged 2 replace it.

Will test all Tommow

👍🏽



Hey

 

All of a sudden, when I pressed the accelerator pedal nothing happened. It stayed at about 1500 rpm. I had this error code P2118 and changing this fuse worked for me to fix it.

 

Hello Mr. Jeff
I have read your instructions and did as you said ... I changed the ETCS fuse and then cleared the codes .. the code has gone and after a while it has returned when I start the engine again and I still have the same issue ... the RPM is about 1500 and can't cross 40 km\h