[steamship]

Managed to clean all four ABS sensors at last (front O/S bolt seized). Cleared all error codes, and driven 350 miles. ABS and traction control lights only came on at around 320 miles. Car has been running fine. Did a scan and only major ones are as follows:

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Address 01: Engine Labels: None
Part No: 4D0 907 558 AB
Component: 3.7L V8/5V G 0002
Coding: 11753
Shop #: WSC 23143
VCID: 6DDBD76D278ADF1
WAUZZZ4D92N002072 AUZ7Z0A1855153

7 Faults Found:
17530 - Oxygen (Lambda) Sensor Heating; B2 S2
P1122 - 35-00 - Open Circuit
17548 - Oxygen (Lambda) Sensor; B2 S2
P1140 - 35-00 - Internal Resistance too High
17831 - Secondary Air Injection System; Bank 1
P1423 - 35-00 - Insufficient Flow
17819 - Secondary Air Injection System; Bank 2
P1411 - 35-00 - Insufficient Flow
17521 - Oxygen (Lambda) Sensor; B1 S1
P1113 - 35-10 - Internal Resistance too High - Intermittent
17535 - Fuel Trim; Bank 1 (Mult)
P1127 - 35-10 - System too Rich - Intermittent
17537 - Fuel Trim; Bank 2 (Mult)
P1129 - 35-10 - System too Rich - Intermittent
Readiness: 0010 0001

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Address 03: ABS Brakes Labels: 8D0-907-389.lbl
Part No: 4D0 907 389 E
Component: ABS/ESP allrad D56
Coding: 08397
Shop #: WSC 02313
VCID: 31630B1DFB327B1

2 Faults Found:
01464 - Brake Pressure/lateral Acceleration Sensor
48-10 - Supply Voltage - Intermittent
01423 - Lateral Acceleration Sensor (G200)
35-10 - - - Intermittent

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Have posted new thread about G200 sensor. I know I have issues with one of the lambda sensors, which leaves the Secondary Air Injection System. I've replaced as many of the vacuum hoses that I considered dodgy (and which I could manage). The Ross-Tech site gives these possible solutions:

Check Fuse for Secondary Air Injection Pump - will do today, once I find it
Check Vacuum Hose(s) - weather permitting, I'll check the ones at the back of the engine
Check Piping between Secondary Air Injection Pump and Combi (Secondary Air Injection) Valve
Check Secondary Air Injection Solenoid(s) - where is it and how can I check these?
Check Combi Valve(s) - how can I check these?

I've checked through my other logs and the SAI errors aren't always there. I'm hoping that if I can sort this out, it might resolve the fuel trim issue, but then again, that might have something to do with it running on LPG.