P0A34: Drive Motor B Temperature Sensor Circuit Intermittent
What to do
Note when the light comes and goes, particularly wet weather and rough surfaces — the pattern usually names the harness section.
What this code means
Motor B's temperature signal is cutting in and out — changes no real winding could produce.
Temperature moves slowly, so intermittency convicts the wiring almost by itself. On a rear-motor car the underfloor harness and its connectors — soaked, salted and flexed for years — are the place to start.
Likely causes
Start here
- Intermittent wiring fault · moderate
Less common
- Water ingress into connector · easy
- Road damage to underfloor wiring · moderate
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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