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Explaining P1682 and P0522 Car Diagnostic Codes

Aug 01, 2026 · 05:25 PM
Ended: Aug 01, 2026 · 10:49 PM
User
[The user sent an image~ Here's what I can see:
Based on the image provided, here is a detailed description of the visible elements:

**Subject:**
The main subject is a handheld automotive diagnostic scanner tool, specifically the **Foxwell NT301** model. It is resting on a textured, beige fabric surface, which appears to be a car seat.

**Screen Display:**
The LCD screen is backlit and displays specific vehicle diagnostic data:
* **Top Left:** The code **"P1682"** is displayed in blue. This is a Diagnostic Trouble Code (DTC).
* **Top Right:** The text **"2/2"** indicates this is the second page of data.
* **Middle Line:** The text **"$07E8 GM"** appears in blue. This indicates the data mode (Mode 7) and the vehicle manufacturer (General Motors).
* **Below Code:** The text **"Driver 5 Line 2"** is visible in white, likely describing the specific sensor or data stream being read.
* **Bottom Left:** The text **"OBDII/EOBD"** is printed on the bezel below the screen.
* **Bottom Right:** The model number **"NT301"** is printed on the bezel.

**Buttons and Controls:**
Below the screen is a keypad with various function buttons:
* **Status Indicators:** Just below the screen text, there are three indicator lights: a green checkmark, a yellow triangle, and a red circle with an exclamation point.
* **Navigation/Function Keys:**
* **Top Left:** A black button with an upward arrow and the word **"READ"**.
* **Top Right:** A black button with a downward arrow and the word **"ERASE"**.
* **Middle Left:** A black button with a left-pointing arrow.
* **Middle Right:** A black button with a right-pointing arrow.
* **Central Button:** A prominent light blue button labeled **"I/M"** (likely for Readiness Monitors).
* **Bottom Row:**
* **Left:** A black button with a left arrow and the word **"BACK"**.
* **Center:** A black button labeled **"HELP"**.
* **Right:** A black button with a right arrow and the word **"ENTER"**.
* **Bottom Center:** A small red button with a symbol (appearing to be a car with an arrow) located at the very bottom of the device.

**Physical Characteristics:**
* **Casing:** The device has a rugged, ergonomic design. The outer shell is black, while the inner faceplate and button accents are bright orange.
* **Cable:** A black cable extends from the top of the unit, used to connect to a vehicle's OBD-II port.
* **Background:** The background is a light tan or greyish-beige woven fabric with a small, repeating geometric pattern, characteristic of automotive interior upholstery.]
[If you need a closer look, use vision_analyze with image_url: /root/.hermes/cache/images/img_15ddae3ad198.jpg ~]

[The user sent an image~ Here's what I can see:
Based on the image, here is a detailed description of the visible elements:

**The Device**
The image features a handheld automotive diagnostic scanner, specifically a **Foxwell NT301**. It has a rugged design with an orange plastic casing surrounded by a black rubberized grip.

**The Screen**
The LCD screen is illuminated and displays diagnostic trouble code information:
* **Top Left:** The code **P0522** is displayed in large white text. Next to it is a small blue question mark icon.
* **Top Right:** The text "**1/2**" indicates this is the first of two pages of information.
* **Middle Line:** Below the code, it reads "**$07E8 Generic**," indicating the code system.
* **Description:** The bottom section of the screen displays the definition of the code: "**Engine Oil Pressure Sensor/ Switch Low**".

**Text on the Device Body**
* Below the screen, the text "**OBDII/EOBD**" and "**NT 301**" is printed in white.

**Buttons and Controls**
The device has a grid of black buttons with white text and arrows:
* **Status Indicators (Top Row):** Above the main navigation buttons, there are three indicator lights: a green circle with a checkmark, a yellow triangle with an exclamation point, and a red circle with an exclamation point (which appears to be illuminated).
* **Function Buttons:** A button labeled "**READ**" with an upward arrow and a button labeled "**ERASE**" with a downward arrow.
* **Navigation:** Left and Right arrow buttons flank a central button.
* **Center Button:** A light blue button labeled "**I/M**".
* **Bottom Row:** A "**BACK**" button (with a left arrow), a "**HELP**" button, and an "**ENTER**" button (with a right arrow).
* **Power:** At the very bottom center, there is a small red button.

**Cable and Background**
* A black cable extends from the top of the scanner unit.
* The device is resting on a textured, light beige or grey fabric surface, which appears to be a car seat or carpet.]
[If you need a closer look, use vision_analyze with image_url: /root/.hermes/cache/images/img_d0a6b8775af7.jpg ~]

Tell what the codes mean
Assistant

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"url": "https://www.youtube.com/watch?v=LaO6Ff5_vlQ",
"title": "Causes and Fixes GM / Chevy P1682 Code: Driver 5 Line 2 ...",
"description": "A P1682 Code is set when there is a voltage difference between these two circuits. Possible Causes of a P1682 Code: Bad Relay / Blown Fuse (ECM ...",
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"title": "P1682 Code: Ignition 1 Switch Circuit 2",
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"description": "A P0522 code is set when the computer (ECM/PCM) detects that engine oil pressure is low. An oil pressure switch uses a spring with that will ...",
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"title": "P0522 Code: Engine Oil Pressure Sensor/Switch “A” Circuit Low",
"description": "The P0522 error code warns the driver that the vehicle's powertrain control module (PCM) has detected a potential incorrect or low voltage signal from the ...",
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"description": "While this error code can appear when your car has low oil levels, the wrong oil or an oil blockage, the most likely culprit is electrical.",
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Assistant
Here's what those codes mean:

## P1682 — Ignition 1 Switch Circuit 2
**GM-specific code.** The PCM detected a voltage difference between multiple ignition feeds. Common causes:
- Bad/failing underhood fuse box (especially the ignition relay)
- Blown fuse for the ECM/PCM power feed
- Corroded wiring or loose ground at the PCM
- Bad ignition switch or relay

## P0522 — Engine Oil Pressure Sensor/Switch "A" Circuit Low
The PCM saw low voltage from the oil pressure sensor/switch. Common causes:
- Low actual oil level or pressure
- Faulty oil pressure sensor/switch
- Wiring issues to the sensor
- Wrong oil viscosity

---

**Bottom line:** P1682 is electrical/ignition-related on the GM side. P0522 is an oil pressure circuit issue. If the oil level checks out on P0522, it's likely the sensor itself. For P1682, start at the underhood fuse/relay box—that's the usual culprit on GM trucks.
User
Cost and repair/labor, Gary, Indiana
Assistant

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Assistant

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Assistant
## Repair Costs — Gary, Indiana

**Local labor rate:** Indiana independent shops run **$110–$145/hr**. Dealers (AAA average) are around **$221/hr**.

---

## P1682 — Ignition 1 Switch Circuit 2

| Scenario | Parts | Labor (IN rate) | Total |
|---|---|---|---|
| Blown fuse / bad relay | $10–$30 | 0.5–1 hr | **$65–$175** |
| Ignition switch | $50–$200 | 1–2 hr | **$160–$490** |
| Underhood fuse box | $30–$450 | 2–4 hr | **$250–$970** |

**Most likely on GM:** bad relay/fuse in underhood box. Start there—cheap and common fix.

---

## P0522 — Oil Pressure Sensor/Switch

| | Cost |
|---|---|
| Parts (sensor) | $10–$80 |
| Labor | 1–2 hrs @ $110–$145 |
| **Total (independent)** | **$120–$310** |
| **Total (dealer)** | **$250–$400** |

Some sensor locations are easier than others—oil filter housing type takes longer than a simple external sensor.

---

## Combined at an independent Gary shop
If it's just the fuse/relay + sensor swap: **$185–$485** total, roughly 2–3 hours labor.

**First move:** Check oil level manually. If P0522 is just low oil, top it off and clear the code. For P1682, swap the underhood ignition relay first—they're known failure points on GM and cost ~$15. That eliminates both codes cheap if the sensor is the only remaining issue.