AutoCodesDodge – P2628 Dodge

P2628 Dodge Code - Oxygen Sensor Positive Current Trim Circuit High Bank 1 Sensor 1

Quick Answer

A resistor is installed in the Universal Heated Oxygen Sensor (HO2S) connector for part to part variance. Common causes include Faulty Heated Oxygen Sensor (HO2S), Heated Oxygen Sensor (HO2S) harness is open or shorted, Heated Oxygen Sensor (HO2S) circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P2628 Dodge indicates Oxygen Sensor Positive Current Trim Circuit High Bank 1 Sensor 1.
Common causes
Common causes include Faulty Heated Oxygen Sensor (HO2S), Heated Oxygen Sensor (HO2S) harness is open or shorted, Heated Oxygen Sensor (HO2S) circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 2,939
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 22, 2019
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Code P2628 Dodge Description

A resistor is installed in the Universal Heated Oxygen Sensor (HO2S) connector for part to part variance. The Powertrain Control Module (PCM) determines the value of this resistor by taking multiple measurements of the resistor during each ignition ON event. The PCM uses this value in order to compensate for the variance in the pumping current signal. The test fails if the PCM determines the resistance value is too high.
OBDII Code P2628 Dodge - Oxygen Sensor Positive Current Trim Circuit High Bank 1 Sensor 1 - AutoCodes.com
P2628 Dodge Code - Oxygen Sensor Positive Current Trim Circuit High Bank 1 Sensor 1

What are the Possible Causes of the DTC P2628 Dodge?

  • Faulty Heated Oxygen Sensor (HO2S)
  • Heated Oxygen Sensor (HO2S) harness is open or shorted
  • Heated Oxygen Sensor (HO2S) circuit poor electrical connection

How to Fix the DTC P2628 Dodge?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2628 Dodge 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2628 Dodge Code

What does the OBDII code P2628 mean for a Dodge vehicle?

P2628 indicates an issue with the Oxygen Sensor Positive Current Trim Circuit High for Bank 1 Sensor 1, meaning the sensor's signal voltage is higher than expected.

What are the common symptoms of a P2628 code on a Dodge?

Symptoms may include poor fuel economy, reduced engine performance, rough idling, and the illumination of the check engine light.

What causes the P2628 code to appear on a Dodge?

Common causes include a faulty oxygen sensor, damaged wiring or connectors, a short circuit, or issues with the engine control module (ECM).

How do I diagnose a P2628 code?

Inspect the wiring and connectors for damage, check the oxygen sensor for proper function, and use a scan tool to monitor live data and confirm the circuit's performance.

Can a P2628 code cause drivability issues?

Yes, this code can lead to symptoms like reduced fuel efficiency, rough idling, and hesitation during acceleration.

Is it safe to drive with a P2628 code on a Dodge?

While the vehicle may still run, driving with this code can cause long-term damage to the engine or catalytic converter if left unresolved.

How do I fix a P2628 code on a Dodge?

Repairs may involve replacing the oxygen sensor, repairing damaged wiring, or addressing issues with the ECM.

What tools are needed to fix a P2628 code?

You will need an OBDII scanner, a multimeter for testing the circuit, and basic hand tools to replace the sensor or repair wiring.

How much does it cost to fix a P2628 code?

Repair costs vary; replacing an oxygen sensor typically costs $100–$300, while wiring repairs or ECM replacement may be more expensive.

Can a dirty air filter cause a P2628 code?

While unlikely, a clogged air filter can affect engine performance and fuel mixture, potentially contributing to oxygen sensor issues.

Discuss the causes and fixes for P2628 Dodge OBDII Code

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