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CEL and 17 DTCs (all short to ground or no signal), but car runs fine (for now) -

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Old 02-07-2006, 07:55 PM
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Default CEL and 17 DTCs (all short to ground or no signal), but car runs fine (for now) -
After clearing the DTCs, CEL and DTCs came on immediately after startup. Should I assume there is a major short somewhere? There are no visible shorts in the engine compartment. Battery is fine. I'll try swapping the ECU. I'll jack the car in the morning and look at the O2 sensors and wires. What else should I look for? Thanks.

17 Faults Found:
17833 - EVAP Purge Valve (N80): Short to Ground
P1425 - 35-00 - -
17938 - Camshshaft Timing Adjustment: Short to Ground
P1530 - 35-00 - -
17955 - Boost Pressure Regulation Valve (N75): Short to Ground
P1547 - 35-00 - -
17529 - Oxygen (Lambda) Sensor Heating Circuit: B2 S2: Short to Ground
P1121 - 35-00 - -
17525 - Oxygen (Lambda) Sensor Heating Circuit: B1 S2: Short to Ground
P1117 - 35-00 - -
17522 - Oxygen (Lambda) Sensor: B1 S2: Internal Resistance too High
P1114 - 35-00 - -
17548 - Oxygen (Lambda) Sensor: B2 S2: Internal Resistance too High
P1140 - 35-00 - -
16486 - Mass Air Flow Sensor (G70): Signal too Low
P0102 - 35-00 - -
17861 - Exhaust Gas Temp Sensor 1 (G235): Open or Short to Plus
P1453 - 35-00 - -
17865 - Exhaust Gas Temp Sensor 2 (G236): Open or Short to Plus
P1457 - 35-00 - -
17523 - Oxygen (Lambda) Sensor Heating Circuit: B1 S1: Short to Ground
P1115 - 35-00 - -
17527 - Oxygen (Lambda) Sensor Heating Circuit: B2 S1: Short to Ground
P1119 - 35-00 - -
17697 - Boost Pressure Control Valve (N249): Short to Ground
P1289 - 35-00 - -
16518 - Oxygen (Lambda) Sensor B1 S1: No Activity
P0134 - 35-00 - -
16538 - Oxygen (Lambda) Sensor B2 S1: No Activity
P0154 - 35-00 - -
16524 - Oxygen (Lambda) Sensor B1 S2: No Activity
P0140 - 35-00 - -
16544 - Oxygen (Lambda) Sensor B2 S2: No Activity
P0160 - 35-00 - -
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Old 02-07-2006, 10:17 PM
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Default Damn, Peter - what did you do?
Is this the first time you had this happen?
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Old 02-08-2006, 04:15 AM
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Default Check ground terminal connections on firewall, and that ECU connectors are fully seated.
What were you doing prior to all these DTCs?
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Old 02-08-2006, 04:35 AM
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I've seen bad fuel pump relays set those faults.
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Old 02-08-2006, 05:38 AM
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didn't do anything... haven't touch anything electrical in weeks
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Old 02-08-2006, 05:40 AM
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Default grounds are fine; ECU connectors fully seated; chip in its socket; no blown fuses - I'm
going under the car now. Then I'll check relays.
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Old 02-08-2006, 05:56 AM
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But he said the car is running???
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Old 02-08-2006, 06:01 AM
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...or perhaps you meant chattering relay that's on most of the time?
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Old 02-08-2006, 06:12 AM
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Seen that with a cut wire, or a blown fuse.
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Old 02-08-2006, 06:57 AM
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Default Update: same codes - checked O2 sensors, all ground connections all fuses, put stock ECU in - will
check relays when I get home from work this evening.

Any kind of VAG readiness check I should be doing?
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