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Matt, Mechanical Engineer
Category: UK Car
Satisfied Customers: 21378
Experience:  BEng hons Mech engineering, in auto industry 22 years
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Need help solving these, all came at once so all of them

Customer Question

Need help solving these, all came at once so all of them sensors cant be bad? Must be one problem causing the other to fail but what? 17931 P1523 is older.
Control Module Part Number: 4B0 906 018 AL
Component and/or Version: 1.8L R4/5VT 01 0006
Software Coding: 05002
Work Shop Code: WSC 00790
10 Faults Found:
17931 - Crash Signal from Airbag Controller: Implausible Signal
P1523 - 35-00 - -
16518 - Oxygen (Lambda) Sensor B1 S1: No Activity
P0134 - 35-00 - -
17833 - EVAP Purge Valve (N80): Short to Ground
P1425 - 35-00 - -
17955 - Boost Pressure Regulation Valve (N75): Short to Ground
P1547 - 35-00 - -
17525 - Oxygen (Lambda) Sensor Heating Circuit: B1 S2: Short to Ground
P1117 - 35-00 - -
17843 - Secondary Air Pump Relay (J299): Short to Ground
P1435 - 35-00 - -
17829 - Secondary Air Injection Solenoid Valve (N112): Short to Ground
P1421 - 35-00 - -
17697 - Boost Pressure Control Valve (N249): Short to Ground
P1289 - 35-00 - -
17522 - Oxygen (Lambda) Sensor: B1 S2: Internal Resistance too High
P1114 - 35-00 - -
16486 - Mass Air Flow Sensor (G70): Signal too Low
P0102 - 35-00 - -
Submitted: 1 year ago.
Category: UK Car
Customer: replied 1 year ago.
Noticed today alot more smoke coming from exhaust, and also car stopped while driving a couple of times. No MIL indication lamp.
Expert:  Matt replied 1 year ago.


to get all those faults at once then there must be a earth / ground issue or other lack of power to the ECU

I'd start by checking the connections to the battery and the main earth connection to the engine block from the chassis / battery earth - all must be tightly connected and free from corrosion - tighten and clean as required

if this is OK then check the earth connections that run out of the engine bay wiring harness and are secured to the engine with ring terminals and small bolts

then check all the power fuses for cracks and corrosion

Expert:  Matt replied 1 year ago.


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