P0AB5: Hybrid/EV Battery Pack Air Temperature Sensor B Circuit Intermittent/Erratic
What to do
Pattern notes help most, as with every intermittent in the block.
What this code means
The exhaust air temperature signal is cutting in and out — wiring, per P0AB0, with the ducting connector as the usual find.
Likely causes
Start here
- Intermittent wiring fault · moderate
- Corroded or loose connector · easy
Less common
- Water ingress into connector · easy
Symptoms
Components involved
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
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What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
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