Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
PDU - Software 1000 Error Requesting Start Engine
1991 Jaguar XJ-6 L6-4.0LSECTION PDU - Software 1000 Error Requesting Start Engine
JDSPDU
PDU Software Release 1000 - Error - Revised Procedure
MODEL: All 4.0L
DATE: 2/94
ISSUE:
When performing base idle speed setting on 4.0 liter engines, the PDU requests that the engine is started twice, the second time the engine is already running.
ACTION:
Ignore the second request to start the engine.
The software error will be corrected at software release PDU 1005.
PDU Software Release 1000 - Error - Revised Procedure
MODEL: All 4.0L
DATE: 2/94
ISSUE:
When performing base idle speed setting on 4.0 liter engines, the PDU requests that the engine is started twice, the second time the engine is already running.
ACTION:
Ignore the second request to start the engine.
The software error will be corrected at software release PDU 1005.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.