Fault code P065B

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Toby1971

New Member

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6

• Jun 15, 2023

• #1

Hi, I have a fault code that keeps on appearing, I can get rid of it on my phone app but keeps coming back.
First 30 mins or so of driving is fine, then engine (amber) light comes on and goes into limp mode. Clear fault and all ok for 30 seconds then on again and repeats.
Any ideas please???

Thanks

 

miktdish

Guns n Chainsaws

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• Jun 15, 2023

• #2

What car ?
What engine ?
What year ?

 

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Toby1971

New Member

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6

• Jun 15, 2023

• #3

miktdish said:

What car ?
What engine ?
What year ?

Click to expand...

Hi, 2015 110 Defender

 

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Toby1971

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6

• Jun 15, 2023

• #4

Toby1971 said:

Hi, 2015 110 Defender

Click to expand...

 

Wimblowdriver

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• Jun 15, 2023

• #5

see attached. Looks alike an alternator problem. Check your battery charge condition.

 

Attachments

• Defender MY12 Workshop Manual (dragged) 2.pdf

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• Defender MY12 Workshop Manual (dragged) 3.pdf

  27.3 KB · Views: 227

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Toby1971

New Member

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6

• Jun 15, 2023

• #6

Wimblowdriver said:

see attached. Looks alike an alternator problem. Check your battery charge condition.

Click to expand...

Thank you so much. I have measured voltage at 12.7V and when running 14.8V so I am guessing alternator ok?

 

Wimblowdriver

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• Jun 15, 2023

• #7

Tests - see attachments

 

Attachments

• Defender MY12 Workshop Manual (dragged) 2.pdf

  33.5 KB · Views: 263
• Defender MY12 Workshop Manual (dragged) 3.pdf

  35.5 KB · Views: 197
• Defender MY12 Workshop Manual (dragged) 4.pdf

  38.3 KB · Views: 259
• Defender MY12 Workshop Manual (dragged) 5.pdf

  25.1 KB · Views: 216

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Toby1971

New Member

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6

• Jun 16, 2023

• #8

Hi guys, I changed battery for a new one, reading was 14.02 so that is in range now. Thought it had fixed the problem but fault code came back 101 now.....

 

Wimblowdriver

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• Jun 16, 2023

• #9

P0101 ?

 

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Toby1971

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6

• Jun 16, 2023

• #10

Sorry P0101

 

Wimblowdriver

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• Jun 16, 2023

• #11

That is a boost problem and will lead to the engine warning light coming on and limp mode. Do a search (top right of page) for P0101, there are plenty of threads as it is a known issue. My advice is always - do not start by replacing the MAF and MAP sensors as they are most likely doing their jobs and the problem will be a leak somewhere in the air intake pipework or in the intercooler. A thorough inspection to find the leak is necessary. Splits can open up when boost pressure comes in, goes into limp mode, and the split seals itself again when boost drops. Can make it hard to find the leaks, but they will be there somewhere - could just be a loose clip? Read the threads in the Puma engine section.