P1293
High Side Open Bank No. 1
P1293 is an OBD-II diagnostic trouble code meaning: High Side Open Bank No. 1. Common causes: broken wire in the oxygen sensor heater circuit, faulty heater circuit relay or fuse. Estimated repair cost: $17–56.
Symptoms
- Increased fuel consumption
- Unstable engine operation at idle
- Check Engine Light Illuminates
- Deterioration of vehicle dynamics
- Increased level of harmful emissions
Causes
- Broken wire in the oxygen sensor heater circuit
- Faulty heater circuit relay or fuse
- Wiring harness damage
- Malfunction of the oxygen sensor itself
- Problems with contacts in the sensor connector
How to Fix
- Check the integrity of the fuses and relays of the heater circuit
- Check the condition of the wiring harness and connectors
- Measure the resistance of the oxygen sensor heater
- Check the voltage in the heater circuit
- If necessary, replace the oxygen sensor
Related codes
Error P1293 by Vehicle Brand
FAQ
What does the P1293 code mean?
P1293 is an OBD-II diagnostic trouble code that indicates: High Side Open Bank No. 1
What causes a P1293 error code?
The most common causes of P1293 include: Broken wire in the oxygen sensor heater circuit; Faulty heater circuit relay or fuse; Wiring harness damage; Malfunction of the oxygen sensor itself.
How do I fix a P1293 diagnostic trouble code?
To fix P1293: Check the integrity of the fuses and relays of the heater circuit. Check the condition of the wiring harness and connectors. Measure the resistance of the oxygen sensor heater. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1293?
Yes, but get it checked soon
How much does it cost to fix P1293?
The estimated repair cost for P1293 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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