CAN Multi-PID Request - Torque main forum https://torque-bhp.com/community/main-forum/can-multi-pid-request/ Torque Discussion Board en-US Sat, 07 Mar 2026 06:41:24 +0000 wpForo 60 RE: CAN Multi-PID Request https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42647 Thu, 11 Jun 2020 10:01:09 +0000 Have you tried just making a custom PID with, for example 010C0D05? I would have thought Torque would send that correctly, but you’d only be able to pick one item out of the response so it would be a bit pointless. I have tried the Custom PID route, and you're right! Unfortunately Torque will only reference to one "Override PID". So, even if I put 0C (RPM), 0D (Speed), 05 (Coolant Temp) in one Custom PID Request, it is treated by Torque as one Sensor or Display only.
You would probably have to put the same request in 3 separate custom PIDs, with each one picking out a different part of the response. I’m not sure it would make it any faster though?
This would be counter-productive and actually increases unnecessary transmit & receive length. In this case, I'm better off just requesting the standard single PIDs.
010C0D05 would not actually be a valid OBDII request though as the standard doesn’t support multiple PIDs in one request.
010C0D05 is actually a Multi-PID Request. OBD2 CAN Bus can request up to 6 PIDs at the same Frame. ELM327 carried over this feature to their Command set and actually created their own format of response when Headers are off and CAN Auto Formatting is on. Here is an example from the Datasheet (pg 46): >01 0B 04 0C 05 00A 0: 41 0B 21 04 3F 0C 1: 17 B8 05 44 00 00 00 The above response is not an OBD Standard Response. It is a special response intended for applications using the ELM327 Standard like Torque. Here is another used by Torque: 010C1 The 1 at the end is not OBD Standard and is created by the ELM327 to facilitate faster turn-around by not waiting for the time-out to happen. This is implemented by Torque using "Faster Communication" setting.
UDS Service 22 does though. The equivalent request would be 22F40CF40DF405.
This looks promising, I will look into this. Thanks!
You will then get into issues of messages exceeding 8 bytes though, which I don’t think standard ELM327 devices can handle for transmission. I know to get this working on an OBDLink LX I had to use a couple of ST commands which are additional to standard ELM327.
ELM327 Standard has the feature "ATAL" which allows unlimited receive Bytes. If it is not turned on, the ELM327 device is expected to return Multi-Frame Responses.]]> Torque main forum lazalem https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42647 RE: CAN Multi-PID Request https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42646 Thu, 11 Jun 2020 08:10:51 +0000 Torque main forum Chrispy https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42646 RE: CAN Multi-PID Request https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42645 Thu, 11 Jun 2020 06:29:08 +0000 Torque main forum lazalem https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42645 RE: CAN Multi-PID Request https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42644 Thu, 11 Jun 2020 00:54:28 +0000 Torque main forum Capp777 https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42644 RE: CAN Multi-PID Request https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42643 Wed, 10 Jun 2020 22:50:32 +0000 Torque main forum lazalem https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42643 RE: CAN Multi-PID Request https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42642 Wed, 10 Jun 2020 22:03:01 +0000 Torque main forum Capp777 https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42642 RE: CAN Multi-PID Request https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42641 Wed, 10 Jun 2020 13:57:43 +0000 Torque main forum lazalem https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42641 RE: CAN Multi-PID Request https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42640 Wed, 10 Jun 2020 13:31:06 +0000 Torque main forum cintakc https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42640 RE: CAN Multi-PID Request https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42639 Wed, 10 Jun 2020 12:42:36 +0000 Torque main forum lazalem https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42639 RE: CAN Multi-PID Request https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42638 Wed, 10 Jun 2020 07:39:48 +0000 Torque main forum cintakc https://torque-bhp.com/community/torque-discussion-ideas/can-multi-pid-request/#post-42638