AutoCodes – Generic – P1530

P1530 Code - Ignition Timing Adjustment Switch Circuit

Quick Answer

With the engine running in closed loop, VSS input over 1 mph and the Powertrain Control Module (PCM) detects the Test Switch was on (circuit grounded) for 5 seconds. Common causes include Faulty Ignition Timing Adjustment Switch, Ignition Timing Adjustment Switch harness is open or shorted, Ignition Timing Adjustment Switch circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: P1530 indicates Ignition Timing Adjustment Switch Circuit.
Common causes: Common causes include Faulty Ignition Timing Adjustment Switch, Ignition Timing Adjustment Switch harness is open or shorted, Ignition Timing Adjustment Switch circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 36,249

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 28, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1530 Description

With the engine running in closed loop, VSS input over 1 mph and the Powertrain Control Module (PCM) detects the Test Switch was on (circuit grounded) for 5 seconds.

OBDII Code P1530 - Ignition Timing Adjustment Switch Circuit - AutoCodes.com — P1530 Code - Ignition Timing Adjustment Switch Circuit

What does this mean?

What are the Possible Causes of the DTC P1530?

Faulty Ignition Timing Adjustment Switch
Ignition Timing Adjustment Switch harness is open or shorted
Ignition Timing Adjustment Switch circuit poor electrical connection

How to Fix the DTC P1530?

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 P1530 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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Information for Specific Makes

P1530 Audi — Intake Camshaft Control Circuit Short To Ground
P1530 BMW — Idle Air Control Actuator 2 Target Position Fault
P1530 Buick — Ignition Timing Adjustment Switch Circuit
P1530 Cadillac — Ignition Timing Adjustment Switch Circuit
P1530 Chevrolet — Ignition Timing Adjustment Switch Circuit
P1530 Ford — Open or Short to A/C Compressor Clutch Circuit
P1530 GMC — Ignition Timing Adjustment Switch Circuit
P1530 Hyundai — Maximum Vehicle Speed Limiting
P1530 MINI — Idle Air Control Actuator 2 Target Position Fault
P1530 Mitsubishi — A/C 1 Switch Circuit Intermittent
P1530 Saab — Accelerator Pedal Position Sensor 1 & 2 Range / Performance Problem
P1530 Suzuki — Ignition Timing Adjustment Switch Circuit
P1530 Volkswagen — Intake Camshaft Control Circuit Short To Ground

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.