P1453 — Volkswagen — Exhaust Gas Temperature Sensor 1 Open Short To B+
P1453 (Volkswagen): Exhaust Gas Temperature Sensor 1 Open Short To B+ — what it means, the affected system and what to check before replacing parts.
Meaning, symptoms, causes and checks
Exhaust Gas Temperature Sensor 1 Open Short To B+. Source catalogue definition; confirm applicability using vehicle service information.
Affected system: Powertrain
Symptoms
- Check Engine light illumination
- Increased exhaust emissions
- Reduced engine performance
- Engine running in limp mode
- Incorrect fuel-air ratio mixture
Possible causes
- Faulty exhaust gas temperature sensor
- Damaged or frayed sensor wiring
- Corroded sensor electrical connector
- Short circuit to battery positive in signal line
- Engine control module internal failure
What to check
- Inspect the EGT sensor wiring harness for visible damage or shorts
- Measure sensor resistance with a multimeter to verify factory specifications
- Check the sensor connector pins for corrosion or bent terminals
- Verify supply voltage at the sensor connector using a digital multimeter
- Scan for additional related exhaust system fault codes