P0037 Pontiac Code - HO2S Heater Control Circuit Low 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
- P0037 Pontiac indicates HO2S Heater Control Circuit Low 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 P0037 Pontiac Description
The Diagnostic Trouble Code (DTC) will be set when the ECM detects a short to ground in the heater output low side driver circuit of the heated oxygen sensor when the heater is commanded OFF for greater than 5 s.
What are the Possible Causes of the DTC P0037 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 P0037 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
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What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0037 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 P0037 Pontiac Code
What does the OBDII code P0037 mean for a Pontiac?
P0037 indicates a problem with the HO2S (Heated Oxygen Sensor) Heater Control Circuit for Bank 1 Sensor 2, specifically low voltage detected in the circuit.
What are the common symptoms of code P0037?
Common symptoms include an illuminated check engine light, decreased fuel efficiency, and potentially higher emissions during vehicle operation.
What causes P0037 on a Pontiac?
The code is often caused by a faulty oxygen sensor, damaged wiring or connectors in the heater control circuit, or issues with the vehicle's powertrain control module (PCM).
Is it safe to drive with code P0037?
While the vehicle may still be drivable, ignoring the issue can lead to reduced fuel efficiency and higher emissions. It's best to address the problem promptly.
How do you diagnose P0037 on a Pontiac?
Diagnosis involves inspecting the oxygen sensor wiring, checking for loose or damaged connectors, testing the sensor’s resistance, and verifying proper voltage delivery from the PCM.
Can a bad oxygen sensor cause P0037?
Yes, a malfunctioning Bank 1 Sensor 2 oxygen sensor, particularly its heater element, is a common cause of this code.
How can you fix code P0037?
Repairs may include replacing the Bank 1 Sensor 2 oxygen sensor, repairing damaged wiring or connectors, or addressing issues with the PCM.
How much does it cost to fix P0037 on a Pontiac?
Costs vary depending on the issue, but replacing the oxygen sensor typically costs $100–$300, including parts and labor.
Can a weak battery trigger P0037?
Yes, a weak battery or voltage supply issue can sometimes cause low voltage in the heater circuit, leading to the P0037 code.
How can you prevent P0037 from recurring?
Regular maintenance, inspecting wiring for damage, and replacing oxygen sensors at recommended intervals can help prevent this code from returning.
Discuss the causes and fixes for P0037 Pontiac OBDII Code
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