P0038 Pontiac Code - HO2S Heater Control Circuit High Voltage Bank 1 Sensor 2
Quick Answer
Heated Oxygen Sensors (HO2S) are used for fuel control and post catalyst monitoring. Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2, Heated Oxygen Sensor Bank 1 Sensor 2 harness is open shorted to ground, Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P0038 Pontiac indicates HO2S Heater Control Circuit High Voltage Bank 1 Sensor 2.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2, Heated Oxygen Sensor Bank 1 Sensor 2 harness is open shorted to ground, Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P0038 Pontiac Description
The Diagnostic Trouble Code (DTC) will be set when the ECM detects a short to voltage in the heater output low side driver circuit of the heated oxygen sensor when the heater is commanded ON for greater than 5 s.
What are the Possible Causes of the DTC P0038 Pontiac?
- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
- Heated Oxygen Sensor Bank 1 Sensor 2 harness is open shorted to ground
- Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection
- Heated Oxygen Sensor Bank 1 Sensor 2 circuit fuse
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0038 Pontiac?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0038 Pontiac code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0038 Pontiac Code
What does the P0038 code mean for a Pontiac?
The P0038 code indicates a high voltage issue in the heated oxygen sensor (HO2S) heater control circuit for Bank 1, Sensor 2.
What are the symptoms of code P0038 in a Pontiac?
Symptoms may include the check engine light, reduced fuel efficiency, and potentially rough engine performance.
What causes the P0038 code in a Pontiac?
Common causes include a faulty oxygen sensor, damaged wiring or connectors, a short circuit, or a malfunctioning PCM.
How can I diagnose the P0038 code on a Pontiac?
Start by checking the wiring and connectors for damage, testing the oxygen sensor’s heater resistance, and using a multimeter to verify voltage levels.
Can I drive my Pontiac with a P0038 code?
While the car may still be driveable, it’s best to address the issue promptly to avoid poor fuel economy and potential damage to the catalytic converter.
How do I fix the P0038 code on a Pontiac?
Repairs may involve replacing the oxygen sensor, repairing damaged wiring or connectors, or addressing PCM-related issues.
How do I test the oxygen sensor for the P0038 code?
Disconnect the sensor and measure the heater element resistance with a multimeter; compare the reading to manufacturer specifications.
How much does it cost to repair the P0038 code on a Pontiac?
Costs vary, but replacing the oxygen sensor typically ranges from $100 to $300, including parts and labor.
Can a bad oxygen sensor cause other issues besides the P0038 code?
Yes, a faulty oxygen sensor can lead to decreased fuel efficiency, increased emissions, and potential damage to the catalytic converter.
How do I prevent the P0038 code from recurring in a Pontiac?
Regular maintenance, including inspecting wiring and ensuring proper sensor function, can help prevent the code from reappearing.
Discuss the causes and fixes for P0038 Pontiac OBDII Code
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